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7 Rem Mag - 7 WSM - 7-08

#101
Re: Loads for 7 Rem Mag-7 WSM-7-08

I'm running in a Stiller TAC 300 Long Action in a 7wsm 71.0gr of Retumbo that is a smidgen under compressed spitin' out 180gr VLD's 3050 in a 28.5" Broughton 5c. Accuracy is great but it was tough to get these things up to speed with Retumbo. I was one group of load testing away from giving H1000 a try. My length to the ogive is 2.513 .

Here is a link to a thread with some more data from my test loads:

7 wsm
 
#103
Re: Loads for 7 Rem Mag-7 WSM-7-08

7wsm

162amax moly
24" Krieger 8.5 twist vias brake
62.3 R17
CCI 250's
Winchester 7wsm Brass
3150fps
.3moa
15.25moa at 825yards
no pressure signs on the brass, still have rounded primers.
 
#105
Re: Loads for 7 Rem Mag-7 WSM-7-08

Request for 7mm-08 powder selection.

I am going to cut my SPS Varmint in 7-08 from 26" down to 18" and maybe even 16"....I fiqure if a 308Win can run 18" no problem out to 1k then the .284 should make the 7-08 run even better.

Leaning towards the 168SMK for both the Litz comparison of the 168VLD vs the 180VLD....basicly only a world class bench shooter would gain anything...the rest of the gain is eaten up in variations....even in his model the difference between the two bullets was negligable. Correct me if I am wrong.

So the sierra book lists the 7-08 in a 26" barrel getting 2600fps from 39.2gr of IMR4064.....then the SSP of 7-08 with 15" barrel lists 2400fps with 38.8gr of IMR4064. For 9" and .4gr of powder I belive that the 15" barrel to loose 200fps is A-ok by me.....so I plan on a 18" barrel and am wondering if anybody has played with the IMR4064 with good results in the 7mm-08? Or any other fast powder? Heard that RL17 would be a good powder to try out as well.


Any help is great.
 
#106
Re: Loads for 7 Rem Mag-7 WSM-7-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dontstrokeme</div><div class="ubbcode-body">Request for 7mm-08 powder selection.

I am going to cut my SPS Varmint in 7-08 from 26" down to 18" and maybe even 16"....I fiqure if a 308Win can run 18" no problem out to 1k then the .284 should make the 7-08 run even better.

Leaning towards the 168SMK for both the Litz comparison of the 168VLD vs the 180VLD....basicly only a world class bench shooter would gain anything...the rest of the gain is eaten up in variations....even in his model the difference between the two bullets was negligable. Correct me if I am wrong.

So the sierra book lists the 7-08 in a 26" barrel getting 2600fps from 39.2gr of IMR4064.....then the SSP of 7-08 with 15" barrel lists 2400fps with 38.8gr of IMR4064. For 9" and .4gr of powder I belive that the 15" barrel to loose 200fps is A-ok by me.....so I plan on a 18" barrel and am wondering if anybody has played with the IMR4064 with good results in the 7mm-08? Or any other fast powder? Heard that RL17 would be a good powder to try out as well.


Any help is great.</div></div>

First, why cut down a perfectly good barrel that is going to give you better velocity. If you want something that is negligible take the accuracy difference between a good 26" barrel and the same barrel (even cut correctly) to "way too f'n short."

Second, for as short as you want it...stick with 4895 or RE-15. anything slower will be a waste of powder.

Third. I don't know how you read into Litz opinion of the 168 SMK and the 180 Berger VLD, (you should also differentiate also if it's the hunter or the match target, different BC) but there is a huge difference. Especially if the two are pushed out at the same speed. Typically, it's a much closer comparison looking at the 168 Bergers and the 180 Bergers. And it's usually about how well the 180's can make up lost speed to the 168's. 168 SMk's aren't on the same long range par as the previous two. That said 168's are very accurate to the range they stay supersonic. If what you plan to shoot is within that range, it's not a bad bullet to go with.
 
#107
Re: Loads for 7 Rem Mag-7 WSM-7-08

Sorry about that....my typing was inaccurate. Brian's comparison was the VLD to VLD for the 168 to 180. I was looking at the 168SMK vs the 175SMK.

Main reason for going that short is to keep it light and fast. I only have "very easy" access to 1111 yards and a little bit further with some work and didn't get the 7-08 to run ELR....that would have been the 280AI. I got the 7-08 to run cheaply and get better BC than the 308Win.

I ordered some 162AMAX and figure they should be about the best for me.
 
#108
Re: Loads for 7 Rem Mag-7 WSM-7-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dontstrokeme</div><div class="ubbcode-body">Sorry about that....my typing was inaccurate. Brian's comparison was the VLD to VLD for the 168 to 180. I was looking at the 168SMK vs the 175SMK.

Main reason for going that short is to keep it light and fast. I only have "very easy" access to 1111 yards and a little bit further with some work and didn't get the 7-08 to run ELR....that would have been the 280AI. I got the 7-08 to run cheaply and get better BC than the 308Win.

I ordered some 162AMAX and figure they should be about the best for me.</div></div>

Copy, clarified on the bullets.

Light and fast with a short barrel to me means useable in tight fighting conditions or hunting in super thick foliage. Other than trimming down what you can to have a better chance at using a short rifle because that's all that'll fit in an area, i.e. shooting out of a window with so much crap behind you that you can't take proper aim.

Shortening a barrel doesn't keep the bullet going light and fast. Just the opposite. Keeping the barrel long will do that. Light or heavy bullets. If you want to shorten the rifle for manueverability then get a collapsible buttstock. At least do that before you take off good velocity giving inches from a barrel.

Also, since that rifle will stabilize the 180 VLD's(it's a 1-9.25 twist) you <span style="text-decoration: underline">can</span> use it for ELR. It just won't get out there quite as fast as the .280/.280AI and 7 mags. FWIW, they don't hold all that great advantage at that range. Most of the bullets velocity loss comes early. The harder you push on air the harder it pushes back. With higher velocity you have the early advantage but as you go out the bullets tend to slow down more evenly. What you get from that early velocity advantage is windage. You buck the wind better early and as 'bullet in the air' time increases then that advantage, which has already been attained, shows up. AT one mile ranges there isn't a whole lot of drop difference in a 7mm-08 vs. a .280/AI or even the 7 mags. It's windage they gain. But, to make the comparison you have to shoot the 180's out there. Litz uses a 168 VLD @ 1k because he pushes it just hard enough to beat the 180 VLD out of the same case out to 1k. Otherwise he'd be using the 180's. He's also the one in Berger pushing to go (back?) to tangent ogives because they are easier to stabilize for target work out to 1K. Until comps go out past 1k (from a formal perspective) the 180 isn't going to have an advantage. Unless, it is used in barrel burning magnum/high cap cases.

Bottom line on that is 7mm-08 will get nearly the range that a .280/AI will or 7mm Mag, you just have to call more windage, and a bit more elevation.

Anyhow, FWIW, I was going to get one of those until <span style="text-decoration: underline">EVERYBODY</span> ran out of stock. After some searching and not being able to locate one I decided once again to go forward with my 7mm-08 build.
 
#109
Re: Loads for 7 Rem Mag-7 WSM-7-08

My reason for building the 7-08 is for the challange. I had a DD Ross built 300WM 1:10 that was absolutly no challange to 1111 yards. No wind hold and just crank the scope and so long as you didn't muff the shot it hit the 13" steel everytime. With the 7-08 I should have to work and force my self to learn.

The Sierra load book lists a 15"SSP at 2400fps for the 168gr and the rifle lists a 26" at 2600fps for the 168gr. Going somewhere in between at 18" I am hoping to get near 2500fps and that will keep the 162gr AMAX supersonic to 1300 yards according to a simple LEE drop calculator. So going transonic at 1300 yards is just fine by me. Other shooters in my AO run 308Win 175gr and claim subsonic at 1100 yards and were expecting all kinds of crazy wobbles at the sound barrier, but nope...they were running just fine. So the transonic change isn't a major concern for me.

I really wanted to go light and "Tactical" with this rifle....the SHTF go to gun. Here is my build list so far:

Rem Varminter 7-08 cut back to 18", might go with 20" first to see how it works out.

McMillan A1-3
Badger M5
Nightforce direct mount w/ 20MOA built in
IOR 2.5-10 FFP MP8 dot w/MIL turrets


The scope mount and scope might change, wanting to keep it light and may go with a titanium 30 or 40 MOA base and some light Alum rings. Or a 2pc 20 MOA base. The scope could become the SS 3-9 variable also depending on cash. But I think a 10x max should suit me fine, if I want to really stretch out I can always challange my self and get better.

I was going to build a 10/22 trainer but got into it and found that doing it half assed was not going to be accurate and to do a full on Kidd barreled action would run $1100.....so the 7-08 is more economical to shoot instead of a full blown trainer rifle.

"Tactical" means under 800 yards to me....LR is not what this rifle is being built to do but it will be capable of it.

Main reason for the post was to try to get some load info for the fast burning powders....I might just have to take some 18" and 16" 308Win loads and go from there. The 7-08 doesn't have a very big following yet!!!

I got my rifle from Sportsmans Safari.
 
#110
Re: Loads for 7 Rem Mag-7 WSM-7-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dontstrokeme</div><div class="ubbcode-body">My reason for building the 7-08 is for the challange. I had a DD Ross built 300WM 1:10 that was absolutly no challange to 1111 yards. No wind hold and just crank the scope and so long as you didn't muff the shot it hit the 13" steel everytime. With the 7-08 I should have to work and force my self to learn.

The Sierra load book lists a 15"SSP at 2400fps for the 168gr and the rifle lists a 26" at 2600fps for the 168gr. Going somewhere in between at 18" I am hoping to get near 2500fps and that will keep the 162gr AMAX supersonic to 1300 yards according to a simple LEE drop calculator. So going transonic at 1300 yards is just fine by me. Other shooters in my AO run 308Win 175gr and claim subsonic at 1100 yards and were expecting all kinds of crazy wobbles at the sound barrier, but nope...they were running just fine. So the transonic change isn't a major concern for me.

I really wanted to go light and "Tactical" with this rifle....the SHTF go to gun. Here is my build list so far:

Rem Varminter 7-08 cut back to 18", might go with 20" first to see how it works out.

McMillan A1-3
Badger M5
Nightforce direct mount w/ 20MOA built in
IOR 2.5-10 FFP MP8 dot w/MIL turrets


The scope mount and scope might change, wanting to keep it light and may go with a titanium 30 or 40 MOA base and some light Alum rings. Or a 2pc 20 MOA base. The scope could become the SS 3-9 variable also depending on cash. But I think a 10x max should suit me fine, if I want to really stretch out I can always challange my self and get better.

I was going to build a 10/22 trainer but got into it and found that doing it half assed was not going to be accurate and to do a full on Kidd barreled action would run $1100.....so the 7-08 is more economical to shoot instead of a full blown trainer rifle.

"Tactical" means under 800 yards to me....LR is not what this rifle is being built to do but it will be capable of it.

Main reason for the post was to try to get some load info for the fast burning powders....I might just have to take some 18" and 16" 308Win loads and go from there. The 7-08 doesn't have a very big following yet!!!

I got my rifle from Sportsmans Safari.</div></div>

Joe,

Like I said 40 gr. of 4895 is about where you'll end up with that and 42 gr. of Re-15. I was getting 2700 yesterday afternoon out of the H4895 X from a 22" barrel. 2561 from 41 gr. of RE-15. And, 2650 from 46 gr. of AA4350. I also used RE-17 but wasn't motivated enough when I shot those to set up my Chrono. I'm glad I eventually did. All the ammo was cold soaked at about 10 deg. F. That's a 22" barrel remember. The barrel that will be going on that rifle will be 27".

And yes, I tried Sportsmans Safari (they were actually the most helpful in looking for one). But, they were out. And so was everyone else. Remington never advertised them. When people found out about them they sold like hotcakes. When I called Remington. They said they aren't going to make anymore of them because no one ordered them. DUH! They won't order them if they don't know you're making them. Remington always seems to need to make that popping noise....the one where their head comes out of their @$$.

-good luck.
 
#111
Re: Loads for 7 Rem Mag-7 WSM-7-08

7WSM
162 A-Max
65gr RL22
Win brass, neck sized only (full BR prep including neck turning)
215M primers
3.118" OAL (just kissing the lands)
3150fps

shoots in the .1's at 100 yards out of 28" Rock 1/8.7 twist barrel.
 
#112
Re: Loads for 7 Rem Mag-7 WSM-7-08

7mm-08 with 168 gr. Berger VLD

7mm-08 Rem
Bullet Powder Start Load Approximate Start Velocity Max Load Approximate Max Velocity Fill Ratio
168 Grain AA XMR 4064 33.5 2253 38.5 2528 95.6%
168 Grain RE-15 33.5 2265 38.6 2565 92.7%
168 Grain H380 37.0 2234 42.5 2569 98.9%
168 Grain IMR 4064 34.5 2337 38.5 2567 94.6%
168 Grain NORMA 204 38.0 2232 43.6 2575 102.5%
168 Grain Ramshot Hunter 38.5 2277 44.4 2628 100.1%
168 Grain VIHT N150 35.0 2265 40.1 2537 97.4%
168 Grain WIN 760 37.5 2290 42.9 2618 92.7%
168 Grain IMR 4350 37.5 2291 42.0 2565 102.0%
168 Grain VARGET 33.0 2250 37.7 2519 90.1%
168 Grain RE-19 40.0 2323 44.5 2596 108.0%
168 Grain IMR 4895 34.5 2386 38.5 2614 94.6%
168 Grain H4350 38.5 2374 42.7 2633 103.2%
168 Grain IMR 4007 SSC 36.5 2295 40.5 2536 96.0%
168 Grain VIHT N140 35.0 2279 39.2 2510 98.3%
168 Grain H4895 34.0 2290 38.3 2531 95.4%
168 Grain VECTAN SP11 37.0 2360 41.0 2589 95.7%
 
#114
Re: Loads for 7 Rem Mag-7 WSM-7-08

Just an update to my load above-(7-08, 162Amax, 40.3 I4895, FGMM 308 brass necked down, 2.835 OAL).

I got my first opportunity to shoot it at 1K today.
I had been concerned and put load development on the back buner until I could make sure the old Douglas 1:10ish barrel I had would stabilize the Amax's........

I shot rather mediocre (first time shooting this rifle at over 550, I'm not fond of the AICS its currently in, and it was my first F-Class, wind was all sorts of switchy, my fingers were greasy from french fries, I had beetles landing on me, etc etc) 501/600.

Other than MY poor performance, I can report I had:
-no reports my rounds keyholing
-4 blown primers (most likely culprit FGMM brass)
-32.5moa to 1000 (80*, 1300ish' asl)
-when the wind was down or consistent and I wasn't slapping the trigger the spotter would keep coming up in damn near the same place!

Anyway I am convinced its stable, and can now try out different powders to get the speed that will make this rifle run well inside the 308's! Like I said, I didn't want to leave my affair with I4895 until I knew it could payoff with stability at distance......
 
#116
Re: Loads for 7 Rem Mag-7 WSM-7-08

So what powder can get more speed out of the 7-08 with less pressure than IMR4895?
Looking at Hogdon's site info, IMR4895 is one of the best for speed/pressure, but if I can't get 2700+ without popping primers is the high BC really doing me any good?
 
#117
Re: Loads for 7 Rem Mag-7 WSM-7-08

Biker,
I ran some through the chronograph today.
7mm-08
Norma brass
2.835 OAL
162gr. A-max
CCI BR2 primer
26" barrel
45.0gr. H4350
The average velocity was 2645. Hodgdon lists max at 48gr. but at 2.875 OAL. I have tested loads to 45.8gr. with no pressure signs in my gun but have not chrono'ed them. The 45.0 load shot so good I am using it for now. I would think 2700 plus would be doable with the H4350 but I didn't want to start too high with the shorter OAL. Of course start low and work up. The only issue that may arise with the H4350 is running out of case capacity with the shorter OAL.
As for the BC I can say that my wind calls were between 1/2 and 3/4 of what I usually do with the .308 175gr. smk and equivalent wind. To me that's an advantage even at 2645fps.
 
#118
Re: Loads for 7 Rem Mag-7 WSM-7-08

7mm WSM: 180g Berger VLD: RL22 65.2g: 0.037 off lands: Velocity 3002


I worked up a load this weekend with a Savage Long Action with 27inch Benchrest Barrel for the 7mm WSM using a 180 Berger VLD. Win Supreme 780 at 66g was around 2850-2940fps but a tight group. I moved up to 67g and got to 3000fps+ but groups went to shit, tried H1000 66g (grouped less than 1/2 inch but velocity around 2850)and 67g (group started to open back up, and settled on 65.2 grains RL22 at 3002fps with a 17fps spread. I took the RL22 to 66g with a velocity of 3024 but groups started to open with NO sign of pressure. The 65.2 yielded at 0.331 inch 5 round group at 100yards. I will stop at this load setting. (the 180g VLD was loaded 0.037inch off the lands).

<span style="font-weight: bold">UPDATE:</span> 6-27-2011 I went to a shoot this passed weekend, and had <span style="font-weight: bold">5 out of 10 blown primers</span> with the above load. Turned out, I switch to a new lot of powder that was much hotter than the lot I loaded up with initially (I know I should have checked, but was in a hurry and did not check my notes about the lot I had initially loaded with). I stopped shooting and sat out the shoot (sucks to drive four hours to watch everyone else shoot).
I re-worked the load on Sun. to 63.5g RL22 and got 1/4-1/2 MOA at 100 yards with no sticky bolts on 2 time fired brass (shitty winchester brass). Velocity is unknown, but I will check with ExBall with target validation. QuickLoad gave ne a velocity and pressure curve at this load that "should" work fine.
 
#119
Re: Loads for 7 Rem Mag-7 WSM-7-08

Sammi 7mm-08 Rem Chamber
18" Factory Barrel
162gr Amax
Set at max mag length for AI Mags with spacer removed
41.3gr IMR4064
RP brass
CCI Magnum Primers
2600FPS Muzzel velocity

With 300 yard zero it takes 7.0 mils to 950 yards and 10.5 mils to 1200 yards. I had to change the velocity to 2750 fps for the ballistic program to match my confirmed drop at 800 and 950 but now the chart is quite accurate. Chart refernces .625 BC and 2750fps.

Going to try RL17 in it and see if I can get a less temp sensitive load.

100_4247.jpg


Well worth the short barrel!!! I would do it again without hesitation.
 
#120
Re: Loads for 7 Rem Mag-7 WSM-7-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dontstrokeme</div><div class="ubbcode-body">Sammi 7mm-08 Rem Chamber
18" Factory Barrel
162gr Amax
Set at max mag length for AI Mags with spacer removed
41.3gr IMR4064
RP brass
CCI Magnum Primers
2600FPS Muzzel velocity

With 300 yard zero it takes 7.0 mils to 950 yards and 10.5 mils to 1200 yards. I had to change the velocity to 2750 fps for the ballistic program to match my confirmed drop at 800 and 950 but now the chart is quite accurate. Chart refernces .625 BC and 2750fps.

Going to try RL17 in it and see if I can get a less temp sensitive load.

100_4247.jpg


Well worth the short barrel!!! I would do it again without hesitation. </div></div>

Thats great to know. I've been looking to rebarrel my 308 to 7-08 for a while now and now feel good about short barrel performace. Nice looking rifle.
 
#121
Re: Loads for 7 Rem Mag-7 WSM-7-08

.284 Loaded to C.O.L: 80,0mm
Bullet: Berger 180 VLD (target)
Brass: Lapua 6.5X284 Norma opened up to 7mm
Primer: 215 Federal
Powder: VV N560, 58,0 grein (safe in my gun, probably unsafe in your gun)
Speed: 905 m/s at +25C
Barrel: 5R Chromemoly from Border Barrels
This load is probably too hot for regular rifling !
 
#122
Re: Loads for 7 Rem Mag-7 WSM-7-08

I need some help with 7mm mag 168 smk retumbo load data. I am loading for an older 116 savage weather warrior for whatever reason it is factory equipped with a 22 inch barrel including muzzle brake.

I will be using federal brass 215 m primers 168 gr sierra match kings and retumbo

Thanks
 
#125
Re: Loads for 7 Rem Mag-7 WSM-7-08

<span style="font-weight: bold"> <span style="color: #FF0000">7mm-08 </span> </span>
Winchester brass
RL-15 @ 44 grains
Federal LR Match primer
Barnes 120 grain TSX
2.756" coal

I use this load out of my model 7 with an 18.5" barrel. I haven't chronoed the load yet, but I do know it will do a number on a whitetail!
 
#126
Re: Loads for 7 Rem Mag-7 WSM-7-08

Hunting load flat and fast

Remington 7 MM MAG

24" MAGNUM PROFILE
110 barnes TSX FB
WW brass
215 fed
70gr RL17 2 grains over book load ((((start lower ))))
3.360 OAL
<span style="color: #FF0000">3650 FPS </span>
 
#129
Re: Loads for 7 Rem Mag-7 WSM-7-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: A.O.R.G.S-Hassey</div><div class="ubbcode-body">I am thinking of a 7 WSM and i was wondering if 3k fps is realistic with a 162g AMAX </div></div>

Short answer, Yes. Depends on powder and barrel length.
 
#131
Re: Loads for 7 Rem Mag-7 WSM-7-08

New barrel already and new load.

7WSM APA long reamer
25" Rock
182gr Berger XLR
66.7gr of 4831SC
CCI 250 Magnum Primers
Winchester Brass
Seated out to the lands it was pushing 3015FPS with a SD of 6.

I also have a mag feed load that is friendlier on everything. 64gr of 4831SC with a 2.960 COAL pushing it slowly at 2861 with a SD of 7.
 
#134
Re: -7mm-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bmarc69</div><div class="ubbcode-body">Anyone tried the RL17 with the 162 amax yet?7mm-08 </div></div>

I have tried RE17 with the amax, started at 39.5 and settled on 42.5 in a Lawton w/ 24 Krieger 1in9. Sorry no chrono data. Set to 2.835, but I have the new Alpha mags coming and should be able to to get 2.965 or more. I'll report when I can reach the lands.
 
#136
Re: Loads for 7 Rem Mag-7 WSM-7-08

<span style="font-weight: bold">7mm-08</span>

162 Grain Hornady A-Max
WW Brass
46.9 Grains H-4350
Fed 210M Primer
2.920" COAL in a Seekins DBM
2726 FPS avg. from a 26" Rem Factory Barrel
 
#138
Re: Loads for 7 Rem Mag-7 WSM-7-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: skinnypitt</div><div class="ubbcode-body">I dont think Lapua makes 7mm RM brass do they? </div></div>

They did, past tense. If you find any old stock hiding on a dustry shelf somewhere, snag it, almost impossible to get now, and worth its weight in gold to buyers.
 
#139
Re: Loads for 7 Rem Mag-7 WSM-7-08

7MM08/Sako TRG22
Guys,
My rifle is in the shop (Benchmark barrels) converting it from .308 to a 7MM08, it will be 26" with a 1-9 twist.
I have been prepping brass and loading up test rounds while I wait, here is what I have.

RP .308 brass with full prep, everything but neck turn.
Tula large rifle primers (Russian made, in the Wolf plant)
Hornaday 162 grn A-Max bullet seated to 2.945 COAL (mag lenth for TRG 22).
Varget powder, three bullets at each charge, 40, 40.5, 41, 41.5, 42, 42.5, 43 Grains.
H 4350 powder, three bullets at each charge, 45, 45.5, 46, 46.5, got hard to seat bullet.

I will post my results when I get her all back together, and yes I know that some of these charges are above "book" but I want to find out where my rifle limit is, and will be checking for pressure signs along the way.
SScott
 
#140
Re: Loads for 7 Rem Mag-7 WSM-7-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sunnyside Scott</div><div class="ubbcode-body">7MM08/Sako TRG22
Guys,
My rifle is in the shop (Benchmark barrels) converting it from .308 to a 7MM08, it will be 26" with a 1-9 twist.
I have been prepping brass and loading up test rounds while I wait, here is what I have.

RP .308 brass with full prep, everything but neck turn.
Tula large rifle primers (Russian made, in the Wolf plant)
Hornaday 162 grn A-Max bullet seated to 2.945 COAL (mag lenth for TRG 22).
Varget powder, three bullets at each charge, 40, 40.5, 41, 41.5, 42, 42.5, 43 Grains.
H 4350 powder, three bullets at each charge, 45, 45.5, 46, 46.5, got hard to seat bullet.

I will post my results when I get her all back together, and yes I know that some of these charges are above "book" but I want to find out where my rifle limit is, and will be checking for pressure signs along the way.
SScott </div></div>

any update here????

i had the same stuff so please up-date info

thanks
 
#141
Re: Loads for 7 Rem Mag-7 WSM-7-08

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sunnyside Scott</div><div class="ubbcode-body">7MM08/Sako TRG22


Guys,
My rifle is in the shop (Benchmark barrels) converting it from .308 to a 7MM08, it will be 26" with a 1-9 twist.
I have been prepping brass and loading up test rounds while I wait, here is what I have.

RP .308 brass with full prep, everything but neck turn.
Tula large rifle primers (Russian made, in the Wolf plant)
Hornaday 162 grn A-Max bullet seated to 2.945 COAL (mag lenth for TRG 22).
Varget powder, three bullets at each charge, 40, 40.5, 41, 41.5, 42, 42.5, 43 Grains.
H 4350 powder, three bullets at each charge, 45, 45.5, 46, 46.5, got hard to seat bullet.

I will post my results when I get her all back together, and yes I know that some of these charges are above "book" but I want to find out where my rifle limit is, and will be checking for pressure signs along the way.
SScott </div></div>

<span style="font-weight: bold">7MM08</span>

I got my TRG back a few days ago, Benchmark put a 3 groove 26" fluted barrel with a match chamber in it, ( I plan on getting some neck turning equipment). I did some testing, here is what I ended up with.

162 grn A max seated 2.940
42.3 grns Varget
Tula Primers
RP brass, .308 necked down
2775 average, with good accuracy

162 grn A max seated 2.945
45 grn H4350
Tula Primers
RP brass, .308 necked down
2750 average, with good accuracy
I am going to stick with the Varget load for a while because I am sitting on 16 lbs of it but I was really happy with H4350.
SScott
 
#143
Re: Loads for 7 Rem Mag-7 WSM-7-08

My newest 7-08 load

Rifle

Remmy with 24" Rock 8.7 twist
Throat is set for 162 amax at 2.95

Load

162 amax
49.5 H4350 (work up, its pretty hot and compressed)
OAL 2.900 for a .050 jump. (couldn't get the speeds without pressure at 2.95 "bullet in the lands")
7-08 win brass
CCI250

Speeds are 2804, and with 50g it was 2861 with single digit SD's but the primer pockets would go to shit in only a few firing. Current load and 10 firings on brass and still going strong.

2800 was my goal with this rifle so I stopped there. It has the same numbers as most 260's with more energy down range, whatever that's worth to punchin paper but it was the caliber I wanted.

 
#144
Re: Loads for 7 Rem Mag-7 WSM-7-08

7mm08
Guys, I just wanted to update you on my TRG in 7mm08 with 26" 3 groove 1-9 twist barrel.
I just picked up some Winchester 7mm08 brass and gave it a light neck turn as well as sorted for concentricity, all were within .004
The Varget load the rifle liked is 42-42.1 grns.
162 grn Amax,
Winchester 7mm08 brass, full prep, neck sized with Lee sizer
Tula large rifle primers
Seated to mag length of 2.945
I threw that shot on the second target, but it still came in under 1/2 inch. I was hoping to get more speed out of it but it looks like I will have to try H4350 for that.
Enjoy,
SScott


001.jpg
 
#150
Re: Loads for 7 Rem Mag-7 WSM-7-08

I'm using Barnes recommended max of...

Barnes 120 gr TSX/TTSX
44 grains of RL-15
Winchester cases
Federal Match Primers

When I had Quick Load I believe it said I should be right at 2900 fps from my rifles abbreviated 18 1/2" barrel.

I can email you the Barnes load data if you'd like. It's in a pdf file.
 
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