300 wby

Norwiscutter

Norwiscutter

Sergeant
Full Member
Minuteman
Mar 26, 2009
101
0
46
Eagle River, WI
#1
Nice to finally be active on this site... lots of great people and info here.

I am preparing to have a howa long action in 300 wby rebarreled, and am wondering if there is any significant reason to convert over to 300 win mag outside of any cost centric rationale. I currently have the necessary dies and an adequate supply of wby brass to last the lifetime of the barrel. Quite frankly, if I were to switch chamberings and incur the costs associated with doing so, I would be more inclined to move up to a 338 of some sort.

So far the major argument against the 300 wby that I have come up with is that the belted mag casings and their associated reloading difficulties. What else am I missing?

I guess what I am looking for is a strong argument against the wby that would be significant enough to merit changing over to a different caliber/chambering.

Thanks in advance for your thoughts.
 
#2
Re: 300 wby

Well first off the Win Mag is a belted magnum also so any argument there is null and void. As for a major argument against I can't think of one. I have a custom 300 wby and love the round. There is no way I would change to another 300 magnum from there. The RUM is a little faster at the expense of significantly more powder and the brass selection is terrible (sorry I hate remmy brass). If I were you I'd keep that rifle as a 300 wby.
 
#3
Re: 300 wby

the big reason against the wby cases is the fact that unless your dies match the chamber in your rifle you will never get the kind of accuracy your looking for in your rifle.
If you where to order 3 different reamers for a wby case and look at the shoulders on them, none of them would ever be the same because there is no way to set up a machine to cut those radii the same. so unless you have your smith cut a sizer die with the reamers he used on your barrel you will have a hell of a time loading for it.
 
#4
Re: 300 wby

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PFCSkoug</div><div class="ubbcode-body">the big reason against the wby cases is the fact that unless your dies match the chamber in your rifle you will never get the kind of accuracy your looking for in your rifle.
If you where to order 3 different reamers for a wby case and look at the shoulders on them, none of them would ever be the same because there is no way to set up a machine to cut those radii the same. so unless you have your smith cut a sizer die with the reamers he used on your barrel you will have a hell of a time loading for it. </div></div>

Once you shoot the brass for the first time your brass is fire formed. Thus it will match the chamber. As for accuracy, mine is a quarter minute rifle.
 
#6
Re: 300 wby

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 30378</div><div class="ubbcode-body">Stick with the Weatherby. The short neck on the Winchester case is enough reason not to go with it. </div></div>

Last I checked, few rounds had won more long range competitions than the 300WM over time. Sure it's been replaced by lower recoiling rounds but its inherent accuracy is hard to argue.

That said, if you are happy with 300 Weatherby and have everything for it then stick with it. I'm not a fan of that family of cartridges but that doesn't mean you can't be.
 
#7
Re: 300 wby

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ATH</div><div class="ubbcode-body">
30378 said:
Stick with the Weatherby.

That said, if you are happy with 300 Weatherby and have everything for it then stick with it. I'm not a fan of that family of cartridges but that doesn't mean you can't be. </div></div>

+1
Click to expand...
 
#12
Re: 300 wby

To give you guys an update, I have ordered a Manners T4 and a Mike Rock m24 contour 1 in 10 in thirty cal to get this project rolling. At this point I am inclined to hold with the wby, but will continue thinking about it until a final decision is necessary. So the general concensus in my case is to have it chambered without freebore, or is that somewhat a matter of preference as well?

I guess what has me nervous the most are the assertions that the WBY has been known not to be as accurute as other options. Now my smith, Randy Gregory, doesn't seem to think it will be a problem, but I don't want to be disapointed when I finally get this thing finished. Obviously there are no assurances in such things, but considering the components I am using and a shooter that can do his part, 1/2 moa shouldn't be out of the question here should it?

Thank you all for your help thus far. I greatly appreciate it.
 
#14
Re: 300 wby

Norwiscutter... I have heard the same damn thing about the 300 WBY not being an accurate cartridge. I can tell you that I have a 100% stock 300 WBY that can shoot half inch groups & it is has freebore. The only problem is that I don't like the muzzle jump and the recoil; thus, I have a hard time shooting it anywhere close to it's potential. I think if you take the time to work up a good handload and you don't mind the recoil (and have a stock that fits you well) that you will find the 300 WBY will meet your expectations.

As far as necking down a 300WBY to a 6.5X300 WBY.... I gotta think barrel like would suck so bad that it simply not be worth it... but that's just my opinion
 
#15
Re: 300 wby

Decide what weight bullet you want to shoot and call Dave Kiff at Pacific Too and Guage. Tell him what bullet weight you want to shoot, ask for min SAAMI reamer and he will make one and to you for about $150. He has made thousands of winning weatherby reamers and win mags.

BH
 
#17
Re: 300 wby

Norwiscutter you never stated what you ultimately plan on doing with this rifle. Are you going to use it as a hunting rifle, or a long range target rifle or both? If it is going to be used as a target rifle, you could stick w/ the 300 wby & use some of the money that you would have used to convert it to a 300 Win & start the paperwork on a suppressor. This will drastically reduce recoil & it will not piss your buddies off who may ultimately end up shooting next to you... depending on what brake you might use, they can be pretty deafening to anyone to the left or right of where you are shooting.
 
#18
Re: 300 wby

Its purpus will be solely that of a 600+ yard target rifle, more for fun than anything else. I have a couple of good spots here to shoot out to 1300-1400 max so at this point do not see the absolute need to move to 338. I have in mind specifically the 208 amax and 210/220 matchkings for this build. I have pretty much decided to stay in 30 cal because of the increased loading costs associated with the 338's. I have around 200 casings of once fired weatherby brass lying around here, as well as the dies, so I figuered why not give the Weatherby shot. As for a break, I think I will have my smith thread it but will wait to install it until I shoot it a bit. Hopefully the overall rifle weight will be suffient enough to make felt recoil bareable. A can, well, that would be fun, but my wife still doesn't know how much the optics are going to cost for this one, I figured I would wait until the rifle is done to spring that one on her.
 
#21
Re: 300 wby

l11zse82.jpg
Yea, the 300 Weatherby. Really hard to load for. Not that accurate. Yada, yada, yada.
 
#22
Re: 300 wby

One other thought I had concerning this; I want to be able to achieve an acurate setup while maintaining cartrage OAL of less than 3.585, the max lenght I can fit in the factory bottom metal. Max factory oal for the WBY is 3.55 or something like that while the win mag is shorter, which in turn allows for longer seating. Now if my theoretical intent is to use the 208 amax, 210 berger, and 210/220 smk as the central focus of my effort, will my OAL limitations prove to be detrimental to the extent that such heavier projectiles prove to be unworkable?
 
#23
Re: 300 wby

You can have the throat cut to whatever depth you choose.Pick the bullets you want to use and measure the bearing surface to find a compromise in throat length to work for at least a couple bullets.Better to leave a little leeway on the short side so when the throat wears you can chase it.

Don't over look the 240 SMK's.They really perform well at Extreme ranges.They have a .711 BC.I built a cartridge/rifle combo around this specific bullet and I like em.

Steve

 
#24
Re: 300 wby

Hard to reload for..... LMFAO.....

Get a good set of Redding S Bushing dies and have at it that WBY will be extremely accurate and 600yards will be a CHIP SHOT for a 300WBY. If it were me I would chamber it with 0 free bore and shoot 210gr VLDs!

Then again a 300win is the 30cal that everything is compared to and is hard to beat! What ever you do stay away from the 300ULTRA, what a barrel buring SOB!
 
#25
Re: 300 wby

I guess the theoretical dilemma that I have is that if I stick with the WBY, my cartridge OAL restrictions will require a substantial depth of seating that in turn will reduce the overall cartridge capacity. If I were to chamber in the WSM for instance, the ability to seat the longer 30 cal bullet offerings might, in the scheme of things, negate the capacity edge of the wby.
Is any one seating the 208 amax or 210/220/240 smks to what essentially amounts to factory length in the wby and if so, how have the results been?
Thanks again for all the help.
 
#26
Re: 300 wby

The reason I say get your own reamer, is that you can have custom hone ddie made for the price of a Redding comp die and it will match your chamber the next time you rebarrel. YOu might not use the same smith or he might changer reamers or thru use it will change size.

BH
 
#27
Re: 300 wby

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Norwiscutter</div><div class="ubbcode-body"> I guess the theoretical dilemma that I have is that if I stick with the WBY, my cartridge OAL restrictions will require a substantial depth of seating that in turn will reduce the overall cartridge capacity. </div></div>

Norwiscutter

It's my opinion you may be placing more importance on seating depth, than is warranted. Below are two projections from Quickload for the SAAMI OAL spec of 3.560 and another for 3.900.

I highlighted the best velocity for what I considered to be "obtainable" powder.

Cartridge : .300 Weath. Mag.
Bullet : .308, 210, Berger VLD
Useable Case Capaci: 85.928 grain H2O = 5.579 cm³
<span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">Cartridge O.A.L. L6: 3.560 inch = 90.42 mm</span></span></span>
Barrel Length : 28.0 inch = 711.2 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63817 psi, or 440 MPa
or a maximum loading ratio or filling of 105 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

23 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Vihtavuori N570 103.6 86.5 5.60 3112 99.0 63817 12949 1.334 !DANGEROUS LOAD-DO NOT USE!
ADI AR 2218 105.0 88.6 5.74 3049 98.6 57924 13051 1.360 ! Near Maximum !
<span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">Ramshot Magnum (Big Boy)</span></span></span> 97.3 82.5 5.35 <span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">3034</span></span></span> 100.0 63817 11222 1.336 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 2 102.5 81.2 5.26 3033 100.0 63817 11394 1.352 !DANGEROUS LOAD-DO NOT USE!
PB Clermont PCL 517 97.7 82.6 5.35 3033 100.0 63817 11213 1.336 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N560 94.9 76.8 4.98 3032 100.0 63817 11503 1.341 !DANGEROUS LOAD-DO NOT USE!
SNPE Vectan SP 12 97.5 82.5 5.34 3032 100.0 63817 11184 1.337 !DANGEROUS LOAD-DO NOT USE!
Accurate MAGPRO 95.2 80.2 5.19 3029 99.7 63817 11706 1.348 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 SSC 93.9 76.4 4.95 3020 100.0 63817 11083 1.331 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 99.3 76.4 4.95 3020 100.0 63817 11083 1.331 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 93.0 76.8 4.98 3018 100.0 63817 10972 1.349 !DANGEROUS LOAD-DO NOT USE!
ADI AP 2214 99.1 81.5 5.28 3015 100.0 63817 10862 1.323 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-25 100.4 79.1 5.13 3013 100.0 63817 10562 1.341 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H1000 104.2 81.6 5.29 3013 100.0 63817 10832 1.323 !DANGEROUS LOAD-DO NOT USE!
--------------
--------------
Cartridge : .300 Weath. Mag.
Bullet : .308, 210, Berger VLD
Useable Case Capaci: 92.334 grain H2O = 5.995 cm³
<span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">Cartridge O.A.L. L6: 3.900 inch = 99.06 mm</span></span></span>
Barrel Length : 28.0 inch = 711.2 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63817 psi, or 440 MPa
or a maximum loading ratio or filling of 105 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

29 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ADI AR 2218 105.0 95.2 6.17 3170 99.6 63361 14050 1.309 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N570 100.7 90.4 5.86 3132 99.3 63817 13710 1.337 !DANGEROUS LOAD-DO NOT USE!
<span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">Hodgdon Retumbo</span></span></span> 104.5 89.4 5.79 <span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">3085</span></span></span> 100.0 63817 11802 1.330 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N560 92.5 80.4 5.21 3054 100.0 63817 12160 1.339 !DANGEROUS LOAD-DO NOT USE!
Ramshot Magnum (Big Boy) 94.8 86.4 5.60 3052 100.0 63817 11861 1.339 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 2 99.8 84.9 5.50 3052 100.0 63817 12034 1.353 !DANGEROUS LOAD-DO NOT USE!
Accurate MAGPRO 92.7 83.9 5.44 3052 99.8 63817 12394 1.348 !DANGEROUS LOAD-DO NOT USE!
PB Clermont PCL 517 95.1 86.4 5.60 3052 100.0 63817 11851 1.339 !DANGEROUS LOAD-DO NOT USE!
SNPE Vectan SP 12 95.0 86.3 5.59 3050 100.0 63817 11821 1.339 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H870 105.0 92.3 5.98 3050 99.7 59981 13022 1.380 ! Near Maximum !
IMR 7828 96.7 80.0 5.19 3042 100.0 63817 11725 1.330 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 SSC 91.5 80.0 5.19 3042 100.0 63817 11725 1.330 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori 24N41 104.0 94.3 6.11 3039 95.4 63817 12825 1.326 !DANGEROUS LOAD-DO NOT USE!
ADI AP 2214 96.6 85.3 5.53 3038 100.0 63817 11496 1.323 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 90.5 80.4 5.21 3036 100.0 63817 11596 1.350 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H1000 101.6 85.5 5.54 3036 100.0 63817 11465 1.323 !DANGEROUS LOAD-DO NOT USE!

50 fps in my opinion is not something to chase a specific seating depth and COAL over.

Some factors to consider when selecting a Seating depth and COAL/throat design:

Functioning mag length if a repeater
Powder preference/availability for your application (are you a find a load, and leave it alone, or do you like to "tweak"? Do you buy powder local or order online?)
Type of bullets to be used (do you want to go "all in" i.e. barrel twist, throat design on one bullet and then not have it shoot? Fur or paper? Ranges?)

Hope this helps. I wish I still had my 300 Wby. The brass quality over the 300 RUM Remmy brass is enough reason for me.

If you're looking to have a reamer made...you could always seat several of your desired bullets at your maximum functioning mag length (if a repeater) and send those off to PTG for a custom reamer.

If you don't like the double radius shoulders, ask for conventional shoulder angle of 25, 30, 40 degrees (as you'd like) when you order up that reamer. When you have the barrel chambered, have it chambered so the bolt will just barely close on several pieces of factory brass.

You can use your conventional double radiused shoulder brass for shooting, and after one shot, wam! you've got your own wildcat...aka the 300 Ackley, 30 Hart, etc.

Then you need custom dies and another $200:)

You've already got the brass...stay with the 300 Roy...that's my vote.
 
#28
Re: 300 wby

BountyHunter is correct. Get your own reamer and stick with the 300 Wby. Dave Kiff from PT&G made mine for a 300 wby that shoots Awesome! Specs: Min SAMMI specs, 4 thousands clearance over the neck, freebore 248 thousands (clearance of .3085 down freebore), w/ a 1.5 degree taper. Kreiger 1-10 SS, shoots less than .5 MOA all day long with 210 Berger, 210 SIE MK, 200 SIE GK. 2950 FPS with 210 gr & H1000 powder.
 
#29
Re: 300 wby

Mine shoots great (factory mark V) but I don't load to magazine length. I load to the lands with 208 Amaxes and my OAL is over 4 inches. They won't eject without pulling the bolt, so it's kind of a hassle, but those bullets hit hard!
 
#30
Re: 300 wby

Just a note on the powders
ADI AR2218 is H50BMG
AR2225 is Retumbo
AR2217 is H1000

so they are all available powders there in the US they are made here in OZ packaged in 33lb boxes and freighted to the US where Hodgdon do a technical thing to the powders they run them through a funnel into canisters with Hodgdon Extreme on them that is it.

Have a try with retumbo it was developed especialy for 300 mags with heavy projectiles it works beautifully usualy in a 300 or 7mm mag ghe same powder charge of Retumbo will have less pressure and more velocity
than the same load of H1000 it is made on a new plant with new technoligy.
Retumbo replaced AR2214 and it is similar in burn rate but exhibits less pressure and more energy.

Also use a reamer with less free bore than the factory chamber it looks like their are a few here with reamers you might be able to work out a deal to rent one. Stick with the WBY it will do all you require of it and you can run it at lower pressures than the shorter 300 mags to get the same performance with better barrel life. I would definately have a break fitted shooting strings prone at paper requires good technique and if you get kicked it is easy to pick up bad habbits, The brass is softer than say Lapua but with the case capacity you dont have to ring its neck so the cases should last over 20 shots each. I would use a Redding Type S bushing full length sizing die and a good bullet seater with a floating sleve like the Forster or Redding Comp.

If you do get a Reamer send a loaded dummy round to Dave Kiff that will feed through your mag and he has the drawings and details from Redding so he will match your reamer to your die so all is perfect. I would also make sure the barrel is 30" long to get the performance if the barrel is a true 10 twist the 240gr MatchKings will stabalise and they are about the best as for BC and wind drift you will get some say they dont shoot but i have seen some awsome results with them they would be perfect in your 300WBY with Hetumbo or H50BMG Fed 215 primers and start launching them past a mile.





<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: V-Ref</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Norwiscutter</div><div class="ubbcode-body"> I guess the theoretical dilemma that I have is that if I stick with the WBY, my cartridge OAL restrictions will require a substantial depth of seating that in turn will reduce the overall cartridge capacity. </div></div>

Norwiscutter

It's my opinion you may be placing more importance on seating depth, than is warranted. Below are two projections from Quickload for the SAAMI OAL spec of 3.560 and another for 3.900.

I highlighted the best velocity for what I considered to be "obtainable" powder.

Cartridge : .300 Weath. Mag.
Bullet : .308, 210, Berger VLD
Useable Case Capaci: 85.928 grain H2O = 5.579 cm³
<span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">Cartridge O.A.L. L6: 3.560 inch = 90.42 mm</span></span></span>
Barrel Length : 28.0 inch = 711.2 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63817 psi, or 440 MPa
or a maximum loading ratio or filling of 105 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

23 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Vihtavuori N570 103.6 86.5 5.60 3112 99.0 63817 12949 1.334 !DANGEROUS LOAD-DO NOT USE!
ADI AR 2218 105.0 88.6 5.74 3049 98.6 57924 13051 1.360 ! Near Maximum !
<span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">Ramshot Magnum (Big Boy)</span></span></span> 97.3 82.5 5.35 <span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">3034</span></span></span> 100.0 63817 11222 1.336 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 2 102.5 81.2 5.26 3033 100.0 63817 11394 1.352 !DANGEROUS LOAD-DO NOT USE!
PB Clermont PCL 517 97.7 82.6 5.35 3033 100.0 63817 11213 1.336 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N560 94.9 76.8 4.98 3032 100.0 63817 11503 1.341 !DANGEROUS LOAD-DO NOT USE!
SNPE Vectan SP 12 97.5 82.5 5.34 3032 100.0 63817 11184 1.337 !DANGEROUS LOAD-DO NOT USE!
Accurate MAGPRO 95.2 80.2 5.19 3029 99.7 63817 11706 1.348 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 SSC 93.9 76.4 4.95 3020 100.0 63817 11083 1.331 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 99.3 76.4 4.95 3020 100.0 63817 11083 1.331 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 93.0 76.8 4.98 3018 100.0 63817 10972 1.349 !DANGEROUS LOAD-DO NOT USE!
ADI AP 2214 99.1 81.5 5.28 3015 100.0 63817 10862 1.323 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-25 100.4 79.1 5.13 3013 100.0 63817 10562 1.341 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H1000 104.2 81.6 5.29 3013 100.0 63817 10832 1.323 !DANGEROUS LOAD-DO NOT USE!
--------------
--------------
Cartridge : .300 Weath. Mag.
Bullet : .308, 210, Berger VLD
Useable Case Capaci: 92.334 grain H2O = 5.995 cm³
<span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">Cartridge O.A.L. L6: 3.900 inch = 99.06 mm</span></span></span>
Barrel Length : 28.0 inch = 711.2 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63817 psi, or 440 MPa
or a maximum loading ratio or filling of 105 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

29 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ADI AR 2218 105.0 95.2 6.17 3170 99.6 63361 14050 1.309 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N570 100.7 90.4 5.86 3132 99.3 63817 13710 1.337 !DANGEROUS LOAD-DO NOT USE!
<span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">Hodgdon Retumbo</span></span></span> 104.5 89.4 5.79 <span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">3085</span></span></span> 100.0 63817 11802 1.330 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N560 92.5 80.4 5.21 3054 100.0 63817 12160 1.339 !DANGEROUS LOAD-DO NOT USE!
Ramshot Magnum (Big Boy) 94.8 86.4 5.60 3052 100.0 63817 11861 1.339 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 2 99.8 84.9 5.50 3052 100.0 63817 12034 1.353 !DANGEROUS LOAD-DO NOT USE!
Accurate MAGPRO 92.7 83.9 5.44 3052 99.8 63817 12394 1.348 !DANGEROUS LOAD-DO NOT USE!
PB Clermont PCL 517 95.1 86.4 5.60 3052 100.0 63817 11851 1.339 !DANGEROUS LOAD-DO NOT USE!
SNPE Vectan SP 12 95.0 86.3 5.59 3050 100.0 63817 11821 1.339 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H870 105.0 92.3 5.98 3050 99.7 59981 13022 1.380 ! Near Maximum !
IMR 7828 96.7 80.0 5.19 3042 100.0 63817 11725 1.330 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 SSC 91.5 80.0 5.19 3042 100.0 63817 11725 1.330 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori 24N41 104.0 94.3 6.11 3039 95.4 63817 12825 1.326 !DANGEROUS LOAD-DO NOT USE!
ADI AP 2214 96.6 85.3 5.53 3038 100.0 63817 11496 1.323 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 90.5 80.4 5.21 3036 100.0 63817 11596 1.350 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H1000 101.6 85.5 5.54 3036 100.0 63817 11465 1.323 !DANGEROUS LOAD-DO NOT USE!

50 fps in my opinion is not something to chase a specific seating depth and COAL over.

Some factors to consider when selecting a Seating depth and COAL/throat design:

Functioning mag length if a repeater
Powder preference/availability for your application (are you a find a load, and leave it alone, or do you like to "tweak"? Do you buy powder local or order online?)
Type of bullets to be used (do you want to go "all in" i.e. barrel twist, throat design on one bullet and then not have it shoot? Fur or paper? Ranges?)

Hope this helps. I wish I still had my 300 Wby. The brass quality over the 300 RUM Remmy brass is enough reason for me.

If you're looking to have a reamer made...you could always seat several of your desired bullets at your maximum functioning mag length (if a repeater) and send those off to PTG for a custom reamer.

If you don't like the double radius shoulders, ask for conventional shoulder angle of 25, 30, 40 degrees (as you'd like) when you order up that reamer. When you have the barrel chambered, have it chambered so the bolt will just barely close on several pieces of factory brass.

You can use your conventional double radiused shoulder brass for shooting, and after one shot, wam! you've got your own wildcat...aka the 300 Ackley, 30 Hart, etc.

Then you need custom dies and another $200:)

You've already got the brass...stay with the 300 Roy...that's my vote. </div></div>
 
#31
Re: 300 wby

Bill

That's good to clarify, and had read and heard the relabeling comment but hadn't seen it myself or heard it from the horses mouth so to say.

Which Quickload listing is more accurate for you when using the below powders...the ARxxxx or Hodgdon listing?

I wonder why the different listings in Quickload?

Thank you.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Wild_Bill</div><div class="ubbcode-body">Just a note on the powders
ADI AR2218 is H50BMG
AR2225 is Retumbo
AR2217 is H1000

so they are all available powders there in the US they are made here in OZ packaged in 33lb boxes and freighted to the US where Hodgdon do a technical thing to the powders they run them through a funnel into canisters with Hodgdon Extreme on them that is it.

Have a try with retumbo it was developed especialy for 300 mags with heavy projectiles it works beautifully usualy in a 300 or 7mm mag ghe same powder charge of Retumbo will have less pressure and more velocity
than the same load of H1000 it is made on a new plant with new technoligy.
Retumbo replaced AR2214 and it is similar in burn rate but exhibits less pressure and more energy.

Also use a reamer with less free bore than the factory chamber it looks like their are a few here with reamers you might be able to work out a deal to rent one. Stick with the WBY it will do all you require of it and you can run it at lower pressures than the shorter 300 mags to get the same performance with better barrel life. I would definately have a break fitted shooting strings prone at paper requires good technique and if you get kicked it is easy to pick up bad habbits, The brass is softer than say Lapua but with the case capacity you dont have to ring its neck so the cases should last over 20 shots each. I would use a Redding Type S bushing full length sizing die and a good bullet seater with a floating sleve like the Forster or Redding Comp.

If you do get a Reamer send a loaded dummy round to Dave Kiff that will feed through your mag and he has the drawings and details from Redding so he will match your reamer to your die so all is perfect. I would also make sure the barrel is 30" long to get the performance if the barrel is a true 10 twist the 240gr MatchKings will stabalise and they are about the best as for BC and wind drift you will get some say they dont shoot but i have seen some awsome results with them they would be perfect in your 300WBY with Hetumbo or H50BMG Fed 215 primers and start launching them past a mile.





<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: V-Ref</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Norwiscutter</div><div class="ubbcode-body"> I guess the theoretical dilemma that I have is that if I stick with the WBY, my cartridge OAL restrictions will require a substantial depth of seating that in turn will reduce the overall cartridge capacity. </div></div>

Norwiscutter

It's my opinion you may be placing more importance on seating depth, than is warranted. Below are two projections from Quickload for the SAAMI OAL spec of 3.560 and another for 3.900.

I highlighted the best velocity for what I considered to be "obtainable" powder.

Cartridge : .300 Weath. Mag.
Bullet : .308, 210, Berger VLD
Useable Case Capaci: 85.928 grain H2O = 5.579 cm³
<span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">Cartridge O.A.L. L6: 3.560 inch = 90.42 mm</span></span></span>
Barrel Length : 28.0 inch = 711.2 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63817 psi, or 440 MPa
or a maximum loading ratio or filling of 105 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

23 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Vihtavuori N570 103.6 86.5 5.60 3112 99.0 63817 12949 1.334 !DANGEROUS LOAD-DO NOT USE!
ADI AR 2218 105.0 88.6 5.74 3049 98.6 57924 13051 1.360 ! Near Maximum !
<span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">Ramshot Magnum (Big Boy)</span></span></span> 97.3 82.5 5.35 <span style="text-decoration: underline"><span style="color: #FF0000"><span style="font-weight: bold">3034</span></span></span> 100.0 63817 11222 1.336 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 2 102.5 81.2 5.26 3033 100.0 63817 11394 1.352 !DANGEROUS LOAD-DO NOT USE!
PB Clermont PCL 517 97.7 82.6 5.35 3033 100.0 63817 11213 1.336 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N560 94.9 76.8 4.98 3032 100.0 63817 11503 1.341 !DANGEROUS LOAD-DO NOT USE!
SNPE Vectan SP 12 97.5 82.5 5.34 3032 100.0 63817 11184 1.337 !DANGEROUS LOAD-DO NOT USE!
Accurate MAGPRO 95.2 80.2 5.19 3029 99.7 63817 11706 1.348 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 SSC 93.9 76.4 4.95 3020 100.0 63817 11083 1.331 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 99.3 76.4 4.95 3020 100.0 63817 11083 1.331 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 93.0 76.8 4.98 3018 100.0 63817 10972 1.349 !DANGEROUS LOAD-DO NOT USE!
ADI AP 2214 99.1 81.5 5.28 3015 100.0 63817 10862 1.323 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-25 100.4 79.1 5.13 3013 100.0 63817 10562 1.341 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H1000 104.2 81.6 5.29 3013 100.0 63817 10832 1.323 !DANGEROUS LOAD-DO NOT USE!
--------------
--------------
Cartridge : .300 Weath. Mag.
Bullet : .308, 210, Berger VLD
Useable Case Capaci: 92.334 grain H2O = 5.995 cm³
<span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">Cartridge O.A.L. L6: 3.900 inch = 99.06 mm</span></span></span>
Barrel Length : 28.0 inch = 711.2 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63817 psi, or 440 MPa
or a maximum loading ratio or filling of 105 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

29 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ADI AR 2218 105.0 95.2 6.17 3170 99.6 63361 14050 1.309 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N570 100.7 90.4 5.86 3132 99.3 63817 13710 1.337 !DANGEROUS LOAD-DO NOT USE!
<span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">Hodgdon Retumbo</span></span></span> 104.5 89.4 5.79 <span style="text-decoration: underline"><span style="color: #FF6600"><span style="font-weight: bold">3085</span></span></span> 100.0 63817 11802 1.330 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N560 92.5 80.4 5.21 3054 100.0 63817 12160 1.339 !DANGEROUS LOAD-DO NOT USE!
Ramshot Magnum (Big Boy) 94.8 86.4 5.60 3052 100.0 63817 11861 1.339 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 2 99.8 84.9 5.50 3052 100.0 63817 12034 1.353 !DANGEROUS LOAD-DO NOT USE!
Accurate MAGPRO 92.7 83.9 5.44 3052 99.8 63817 12394 1.348 !DANGEROUS LOAD-DO NOT USE!
PB Clermont PCL 517 95.1 86.4 5.60 3052 100.0 63817 11851 1.339 !DANGEROUS LOAD-DO NOT USE!
SNPE Vectan SP 12 95.0 86.3 5.59 3050 100.0 63817 11821 1.339 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H870 105.0 92.3 5.98 3050 99.7 59981 13022 1.380 ! Near Maximum !
IMR 7828 96.7 80.0 5.19 3042 100.0 63817 11725 1.330 !DANGEROUS LOAD-DO NOT USE!
IMR 7828 SSC 91.5 80.0 5.19 3042 100.0 63817 11725 1.330 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori 24N41 104.0 94.3 6.11 3039 95.4 63817 12825 1.326 !DANGEROUS LOAD-DO NOT USE!
ADI AP 2214 96.6 85.3 5.53 3038 100.0 63817 11496 1.323 !DANGEROUS LOAD-DO NOT USE!
Norma MRP 90.5 80.4 5.21 3036 100.0 63817 11596 1.350 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H1000 101.6 85.5 5.54 3036 100.0 63817 11465 1.323 !DANGEROUS LOAD-DO NOT USE!

50 fps in my opinion is not something to chase a specific seating depth and COAL over.

Some factors to consider when selecting a Seating depth and COAL/throat design:

Functioning mag length if a repeater
Powder preference/availability for your application (are you a find a load, and leave it alone, or do you like to "tweak"? Do you buy powder local or order online?)
Type of bullets to be used (do you want to go "all in" i.e. barrel twist, throat design on one bullet and then not have it shoot? Fur or paper? Ranges?)

Hope this helps. I wish I still had my 300 Wby. The brass quality over the 300 RUM Remmy brass is enough reason for me.

If you're looking to have a reamer made...you could always seat several of your desired bullets at your maximum functioning mag length (if a repeater) and send those off to PTG for a custom reamer.

If you don't like the double radius shoulders, ask for conventional shoulder angle of 25, 30, 40 degrees (as you'd like) when you order up that reamer. When you have the barrel chambered, have it chambered so the bolt will just barely close on several pieces of factory brass.

You can use your conventional double radiused shoulder brass for shooting, and after one shot, wam! you've got your own wildcat...aka the 300 Ackley, 30 Hart, etc.

Then you need custom dies and another $200:)

You've already got the brass...stay with the 300 Roy...that's my vote. </div></div> </div></div>
 
#35
Re: 300 wby

Nice information in this thread, I'm thinking about getting into relaoding for my .300 Wby and came across this. If a 240gr SMK is loaded to max mag length how much is it pushed into the case? I know the Weatherby has a lot more neck length than the WM so is this really even an issue?
 
#37
Re: 300 wby

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: V-Ref</div><div class="ubbcode-body">What's your maximum functioning mag length? Need to know that sir... </div></div>

It should be the same as the OPs, 3.585 since he is using a Howa Long Action and I'll be using a Vanguard (Howa 1500) action.
 
#38
Re: 300 wby

There are no "reloading issues" associated with belted cases that exist except in cyberspace. I own 6 H&H based magnums from the 244 to the new 400 H&H. They are all as easy to reload as a 308 and a lot easier than a 22 Hornet.
As to accuracy issues with the 300 Weatherby... more BS. It's as accurate as any 30 caliber magnum in that performance envelope. Were it not, I doubt the US Government would have let a contract in 1992 to build six of these:

RemingtonC6543998GI.jpg

 
#39
Re: 300 wby

This may have already been mentioned. I didn't read every post. But the Weatherby is a great cartridge. I don't like the free-bore that factory rifles have, but have seen some that shoot like a laser beam. If your not going to shoot heavy bullets, the win mag is fine. I just don't like the short neck for a heavy bullet. IMO figure out what bullet you want to shoot, make a dummy round(no powder/primer) with the bullet seated with the base right at the shoulder/neck joint. Make shure it will fit in your magazine box. Then send it to Dave at PTG and have him make you a match reamer for your cartrige. TM
 
#40
Re: 300 wby

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Mr. Humble</div><div class="ubbcode-body">There are no "reloading issues" associated with belted cases that exist except in cyberspace. I own 6 H&H based magnums from the 244 to the new 400 H&H. They are all as easy to reload as a 308 and a lot easier than a 22 Hornet.
As to accuracy issues with the 300 Weatherby... more BS. It's as accurate as any 30 caliber magnum in that performance envelope. Were it not, I doubt the US Government would have let a contract in 1992 to build six of these:

RemingtonC6543998GI.jpg

</div></div>

What is the story behind those?
 
#41
Re: 300 wby

i have a question, hopfully ya'll can help

i am trying to sell a 300 wthby mag improved for a friend......completely custom rifle......main question that i keep getting asked is

"how much is the case capacity increased over the standard 300 wthby?

I cannot answer as i've not loaded or even held one of the fire formed brass........does anyone on here know anything about this round other than the shoulder is blown slightly forward.....any info would be greatly appreciated....i can't find anything at all on the net about the cartridge

thanks
 
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