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Gunsmithing 300 WM build
- Thread starter my human host
- Start date
Re: 300 WM build
It's a 300 WM. 10 twist Brux. Manners t4a with Surgeon DBM.
I must have needed an ego check. Despite by best efforts to get this rifle to shoot with 208 grain Amaxes and H1000, I failed miserably. You can see what it does with elcheapo Rem factory fodder. I've got some 200 grain Hybrids I'll be trying here shortly.
It's a 300 WM. 10 twist Brux. Manners t4a with Surgeon DBM.
I must have needed an ego check. Despite by best efforts to get this rifle to shoot with 208 grain Amaxes and H1000, I failed miserably. You can see what it does with elcheapo Rem factory fodder. I've got some 200 grain Hybrids I'll be trying here shortly.
Re: 300 WM build
Just a thought, I had similar groups when I loaded to mag length with that combo. If there's too much bearing surface behind the neck they start flying all cattywaumpus. I seat out to the lands now and it's night and day difference.
If you need mag length ammo (which it looks like you do) the 200 hyb. should do the trick. Awesome stick did you true that action up yourself? how long did it take you to chamber that thing?
Just a thought, I had similar groups when I loaded to mag length with that combo. If there's too much bearing surface behind the neck they start flying all cattywaumpus. I seat out to the lands now and it's night and day difference.
If you need mag length ammo (which it looks like you do) the 200 hyb. should do the trick. Awesome stick did you true that action up yourself? how long did it take you to chamber that thing?
Re: 300 WM build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lance Criminal</div><div class="ubbcode-body">Just a thought, I had similar groups when I loaded to mag length with that combo. If there's too much bearing surface behind the neck they start flying all cattywaumpus. I seat out to the lands now and it's night and day difference.
If you need mag length ammo (which it looks like you do) the 200 hyb. should do the trick. Awesome stick did you true that action up yourself? how long did it take you to chamber that thing? </div></div>
I used the PTG Tac Match reamer. I can jam and still stay within mag length.
I jammed the Amaxes. I jumped them. I pushed them from 2750 all the way 3100. I did everything except dip the bastards in holy water. You should have heard me laffin when the cheapest pos factory ammo I could find bugholed five shots. That's just how it goes sometimes.
Cutting the chamber wasn't all that bad. Yes, I trued the action and thank you for the compliment.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lance Criminal</div><div class="ubbcode-body">Just a thought, I had similar groups when I loaded to mag length with that combo. If there's too much bearing surface behind the neck they start flying all cattywaumpus. I seat out to the lands now and it's night and day difference.
If you need mag length ammo (which it looks like you do) the 200 hyb. should do the trick. Awesome stick did you true that action up yourself? how long did it take you to chamber that thing? </div></div>
I used the PTG Tac Match reamer. I can jam and still stay within mag length.
I jammed the Amaxes. I jumped them. I pushed them from 2750 all the way 3100. I did everything except dip the bastards in holy water. You should have heard me laffin when the cheapest pos factory ammo I could find bugholed five shots. That's just how it goes sometimes.
Cutting the chamber wasn't all that bad. Yes, I trued the action and thank you for the compliment.
Re: 300 WM build
Tried any other bullets yet? 210 VLD or SMK?
Did you check bullet concentricity and loaded bullet run-out?
Case neck concentricity?
Fresh dies, or have you loaded successfully for another rifle with them?
Tried any other bullets yet? 210 VLD or SMK?
Did you check bullet concentricity and loaded bullet run-out?
Case neck concentricity?
Fresh dies, or have you loaded successfully for another rifle with them?
Re: 300 WM build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PRKmachinist</div><div class="ubbcode-body">Tried any other bullets yet? 210 VLD or SMK?
Did you check bullet concentricity and loaded bullet run-out?
Case neck concentricity?
Fresh dies, or have you loaded successfully for another rifle with them? </div></div>
The dies are fresh, but didn't give any runout problems. Case necks were skimmed.
I'll be trying the 200 grain Hybrids sometime this week.
Normally, if I want a bullet/powder combo to work, I can make it happen. Can't win them all, I guess.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PRKmachinist</div><div class="ubbcode-body">Tried any other bullets yet? 210 VLD or SMK?
Did you check bullet concentricity and loaded bullet run-out?
Case neck concentricity?
Fresh dies, or have you loaded successfully for another rifle with them? </div></div>
The dies are fresh, but didn't give any runout problems. Case necks were skimmed.
I'll be trying the 200 grain Hybrids sometime this week.
Normally, if I want a bullet/powder combo to work, I can make it happen. Can't win them all, I guess.
Re: 300 WM build
Interesting. Gotta watch this and see your results. Getting ready to thread a Rock 10 twist tube for our 300WM and wanted to run 200gr projos. I know individual results vary, but whatever you learn figuring this one out may save us some time.
Interesting. Gotta watch this and see your results. Getting ready to thread a Rock 10 twist tube for our 300WM and wanted to run 200gr projos. I know individual results vary, but whatever you learn figuring this one out may save us some time.
Re: 300 WM build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: my human host</div><div class="ubbcode-body">
You should have heard me laffin when the cheapest pos factory ammo I could find bugholed five shots. That's just how it goes sometimes. </div></div>
According to Rem: http://www.remington.com/products/ammunition/centerfire/rifle-cartridges/core-lokt-centerfire.aspx That 150 grain pointed soft point is getting 3300 fps. I wonder what the come ups look like for that bad boy at 1500yds
I had a tough time with that combo 'til I stopped putting anything down the barrel but bullets. I stopped cleaning the barrel at about 500 rounds and it's only tightened up since then. I know it's probably not the best thing to and I don't know how you mainain but that is just what worked for me. It just seemed like it took a lot longer to get "broken in" than my other guns which didn't need that at all.
still interested to see how this thing turns out though.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: my human host</div><div class="ubbcode-body">
You should have heard me laffin when the cheapest pos factory ammo I could find bugholed five shots. That's just how it goes sometimes. </div></div>
According to Rem: http://www.remington.com/products/ammunition/centerfire/rifle-cartridges/core-lokt-centerfire.aspx That 150 grain pointed soft point is getting 3300 fps. I wonder what the come ups look like for that bad boy at 1500yds
I had a tough time with that combo 'til I stopped putting anything down the barrel but bullets. I stopped cleaning the barrel at about 500 rounds and it's only tightened up since then. I know it's probably not the best thing to and I don't know how you mainain but that is just what worked for me. It just seemed like it took a lot longer to get "broken in" than my other guns which didn't need that at all.
still interested to see how this thing turns out though.
Re: 300 WM build
I've got right at 100 rnds through mine and I've cleaned it twice. I'll certainly consider your suggestion if the Bergers make a fuss.
H1000 and the 208 amax is a proven combo. Why this rifle doesn't care for it is anyone's guess.
A few more details on the build.
Rem 700 LA. I removed the factory handle and welded on one of Holland's tactical handles. It seems to be a reasonable balance between easy to manipulate and overall size. Your mileage may vary.
Brux 10 twist m24 (bought from bugholes) contour cut and crowned at 28 inches. Chamber was cut with a 300 WM Tactical Match reamer bought from Grizzly. They had it in stock. Recoil lug is from PTG and is .300 thick.
Trigger is an older factory trigger tweaked and set to 1.5 lbs.
Stock is a Manners t4a that I inletted for Surgeon bottom metal. I had to bring the tang of the action up a bit to maintain the barrel showline when I bedded. Funny thing is, I had to do the same thing on my other t4. It's not going to stop me from buying more of them, though. I love these stocks. After checking the mag for function I glued the bottom metal into the stock.
Base is a 20moa EGW HD. Rings are TPS aluminum. Scope is a 8-32NXS with the NPR1.
I'll keep you guys updated on the load development.
I've got right at 100 rnds through mine and I've cleaned it twice. I'll certainly consider your suggestion if the Bergers make a fuss.
H1000 and the 208 amax is a proven combo. Why this rifle doesn't care for it is anyone's guess.
A few more details on the build.
Rem 700 LA. I removed the factory handle and welded on one of Holland's tactical handles. It seems to be a reasonable balance between easy to manipulate and overall size. Your mileage may vary.
Brux 10 twist m24 (bought from bugholes) contour cut and crowned at 28 inches. Chamber was cut with a 300 WM Tactical Match reamer bought from Grizzly. They had it in stock. Recoil lug is from PTG and is .300 thick.
Trigger is an older factory trigger tweaked and set to 1.5 lbs.
Stock is a Manners t4a that I inletted for Surgeon bottom metal. I had to bring the tang of the action up a bit to maintain the barrel showline when I bedded. Funny thing is, I had to do the same thing on my other t4. It's not going to stop me from buying more of them, though. I love these stocks. After checking the mag for function I glued the bottom metal into the stock.
Base is a 20moa EGW HD. Rings are TPS aluminum. Scope is a 8-32NXS with the NPR1.
I'll keep you guys updated on the load development.
Re: 300 WM build
I don't know what it is with Hornady bullets, but they just won't work in some barrels.
I've seen at least a 3:1 ratio of barrels NOT working with Hornady but working great with Sierr, as compared to the reverse.
Not bashing the redbox bullets. When the barrel works with them, they're great.
I don't know what it is with Hornady bullets, but they just won't work in some barrels.
I've seen at least a 3:1 ratio of barrels NOT working with Hornady but working great with Sierr, as compared to the reverse.
Not bashing the redbox bullets. When the barrel works with them, they're great.
Re: 300 WM build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: my human host</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PRKmachinist</div><div class="ubbcode-body">Tried any other bullets yet? 210 VLD or SMK?
Did you check bullet concentricity and loaded bullet run-out?
Case neck concentricity?
Fresh dies, or have you loaded successfully for another rifle with them? </div></div>
The dies are fresh, but didn't give any runout problems. Case necks were skimmed.
I'll be trying the 200 grain Hybrids sometime this week.
Normally, if I want a bullet/powder combo to work, I can make it happen. Can't win them all, I guess. </div></div>
Get a borescope down there and check out the barrel I'm thinking.
Ehh...nevermind, I forgot it shot one ragged hole with the remington loads.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: my human host</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PRKmachinist</div><div class="ubbcode-body">Tried any other bullets yet? 210 VLD or SMK?
Did you check bullet concentricity and loaded bullet run-out?
Case neck concentricity?
Fresh dies, or have you loaded successfully for another rifle with them? </div></div>
The dies are fresh, but didn't give any runout problems. Case necks were skimmed.
I'll be trying the 200 grain Hybrids sometime this week.
Normally, if I want a bullet/powder combo to work, I can make it happen. Can't win them all, I guess. </div></div>
Get a borescope down there and check out the barrel I'm thinking.
Ehh...nevermind, I forgot it shot one ragged hole with the remington loads.
Re: 300 WM build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: my human host</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lance Criminal</div><div class="ubbcode-body">Just a thought, I had similar groups when I loaded to mag length with that combo. If there's too much bearing surface behind the neck they start flying all cattywaumpus. I seat out to the lands now and it's night and day difference.
If you need mag length ammo (which it looks like you do) the 200 hyb. should do the trick. Awesome stick did you true that action up yourself? how long did it take you to chamber that thing? </div></div>
I used the PTG Tac Match reamer. I can jam and still stay within mag length.
I jammed the Amaxes. I jumped them. I pushed them from 2750 all the way 3100. I did everything except dip the bastards in holy water. You should have heard me laffin when the cheapest pos factory ammo I could find bugholed five shots. That's just how it goes sometimes.
Cutting the chamber wasn't all that bad. Yes, I trued the action and thank you for the compliment. </div></div>
About ready to spin up the same reamer. Did you do the whole thing with the finish reamer or did you drill-bore it close first ?
Nice build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: my human host</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lance Criminal</div><div class="ubbcode-body">Just a thought, I had similar groups when I loaded to mag length with that combo. If there's too much bearing surface behind the neck they start flying all cattywaumpus. I seat out to the lands now and it's night and day difference.
If you need mag length ammo (which it looks like you do) the 200 hyb. should do the trick. Awesome stick did you true that action up yourself? how long did it take you to chamber that thing? </div></div>
I used the PTG Tac Match reamer. I can jam and still stay within mag length.
I jammed the Amaxes. I jumped them. I pushed them from 2750 all the way 3100. I did everything except dip the bastards in holy water. You should have heard me laffin when the cheapest pos factory ammo I could find bugholed five shots. That's just how it goes sometimes.
Cutting the chamber wasn't all that bad. Yes, I trued the action and thank you for the compliment. </div></div>
About ready to spin up the same reamer. Did you do the whole thing with the finish reamer or did you drill-bore it close first ?
Nice build
Re: 300 WM build
The screwball that orders my carbide inserts (me), forgot to order inserts for my small boring bar, so I did the whole thing with the finish reamer. It wasn't bad at all. The reamer cut fast , but wasn't "grabby". I ran 200rpm or so.
The screwball that orders my carbide inserts (me), forgot to order inserts for my small boring bar, so I did the whole thing with the finish reamer. It wasn't bad at all. The reamer cut fast , but wasn't "grabby". I ran 200rpm or so.
Re: 300 WM build
Got started with the 200 grain Hybrids today. They shot pretty well considering the wind is gusting to over 30mph. I was getting rocked around behind the rifle pretty badly. The wind would have pummeled my chrony, so I didn't set it up. Edit: I later chrongraphed the 78.5 grain load at 3045 Avg velocity. This load is max in my gun.
and a better pic of the rifle...
I think I'm going to load 20 of the 78.5 grain load and stretch the range out a bit. I'll post the results.
Got started with the 200 grain Hybrids today. They shot pretty well considering the wind is gusting to over 30mph. I was getting rocked around behind the rifle pretty badly. The wind would have pummeled my chrony, so I didn't set it up. Edit: I later chrongraphed the 78.5 grain load at 3045 Avg velocity. This load is max in my gun.
and a better pic of the rifle...
I think I'm going to load 20 of the 78.5 grain load and stretch the range out a bit. I'll post the results.
Re: 300 WM build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: turbo54</div><div class="ubbcode-body">I don't know what it is with Hornady bullets, but they just won't work in some barrels.
I've seen at least a 3:1 ratio of barrels NOT working with Hornady but working great with Sierr, as compared to the reverse.
Not bashing the redbox bullets. When the barrel works with them, they're great. </div></div>
Turbo 54,
You pretty much called it. A 100 rounds of Amaxes with no luck. I put 20 of the 200grain hybrids through this rifle and found 2 loads that show promise.
For the record, I use a lot of 75 grain Amaxes in my 22's and will continue to do so.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: turbo54</div><div class="ubbcode-body">I don't know what it is with Hornady bullets, but they just won't work in some barrels.
I've seen at least a 3:1 ratio of barrels NOT working with Hornady but working great with Sierr, as compared to the reverse.
Not bashing the redbox bullets. When the barrel works with them, they're great. </div></div>
Turbo 54,
You pretty much called it. A 100 rounds of Amaxes with no luck. I put 20 of the 200grain hybrids through this rifle and found 2 loads that show promise.
For the record, I use a lot of 75 grain Amaxes in my 22's and will continue to do so.
Re: 300 WM build
Looks good. I had a similar 300 built this winter with an A3, Stiller, Bartlein combo. My load is 79 grains of H1000 with 210 Berger VLD's at 3017 fps with a 27 inch barrel. With a 300 yard zero, it takes 25.5 moa to 1100. Haven't gotten a chance to run it out further.
I've been wanting to try the 230 Hybrids out of it.
BTW, the reamer used is a min spec reamer with the throat cut off. Then my smith throats it to just touch the lands with my dummy round.
Looks good. I had a similar 300 built this winter with an A3, Stiller, Bartlein combo. My load is 79 grains of H1000 with 210 Berger VLD's at 3017 fps with a 27 inch barrel. With a 300 yard zero, it takes 25.5 moa to 1100. Haven't gotten a chance to run it out further.
I've been wanting to try the 230 Hybrids out of it.
BTW, the reamer used is a min spec reamer with the throat cut off. Then my smith throats it to just touch the lands with my dummy round.
Re: 300 WM build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Brad from ND</div><div class="ubbcode-body">Looks good. I had a similar 300 built this winter with an A3, Stiller, Bartlein combo. My load is 79 grains of H1000 with 210 Berger VLD's at 3017 fps with a 27 inch barrel. With a 300 yard zero, it takes 25.5 moa to 1100. Haven't gotten a chance to run it out further.
I've been wanting to try the 230 Hybrids out of it.
BTW, the reamer used is a min spec reamer with the throat cut off. Then my smith throats it to just touch the lands with my dummy round. </div></div>
Thanks, Brad. I remember seeing a post or two about your 300 on this site awhile back.
I was thinking about trying the 230's as well. Recoil with the 208's was getting to be pretty stout at 3100fps, so I gave the 200 grain Bergers a try first. Berger has so many options for the 30 cals that it can be hard to choose.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Brad from ND</div><div class="ubbcode-body">Looks good. I had a similar 300 built this winter with an A3, Stiller, Bartlein combo. My load is 79 grains of H1000 with 210 Berger VLD's at 3017 fps with a 27 inch barrel. With a 300 yard zero, it takes 25.5 moa to 1100. Haven't gotten a chance to run it out further.
I've been wanting to try the 230 Hybrids out of it.
BTW, the reamer used is a min spec reamer with the throat cut off. Then my smith throats it to just touch the lands with my dummy round. </div></div>
Thanks, Brad. I remember seeing a post or two about your 300 on this site awhile back.
I was thinking about trying the 230's as well. Recoil with the 208's was getting to be pretty stout at 3100fps, so I gave the 200 grain Bergers a try first. Berger has so many options for the 30 cals that it can be hard to choose.
Re: 300 WM build
Better you than me. My current .300WM shoots so good with the H1000/208 combo I would have gone broke developing loads until the barrel was worn out.
I am not sure you could have ever convinced me to go to another bullet before I read this thread. I am sure I will build another WM some day but luckily the one I have keeps stacking them in one hole. Glad you figured it out and it just goes to show that load development requires an open mind and the willingness not to argue with success or failure.
Better you than me. My current .300WM shoots so good with the H1000/208 combo I would have gone broke developing loads until the barrel was worn out.
Re: 300 WM build
The amaxes would have been more economical.
I was testing different seating depths with the Hybrids last night and ten thou jam gave a 5 shot group that looked to be less than .3 at a hundred yards. That's about as good as I can shoot off a bipod and will do anything I need to do with this rifle. So , it worked out in the end.
The amaxes would have been more economical.
I was testing different seating depths with the Hybrids last night and ten thou jam gave a 5 shot group that looked to be less than .3 at a hundred yards. That's about as good as I can shoot off a bipod and will do anything I need to do with this rifle. So , it worked out in the end.
Re: 300 WM build
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Cigarcop</div><div class="ubbcode-body">Great job on the build1 </div></div>
Thank you, sir. It's been a pleasure sharing.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Cigarcop</div><div class="ubbcode-body">Great job on the build1 </div></div>
Thank you, sir. It's been a pleasure sharing.
Re: 300 WM build
I will say that the .300WM with increased recoil can be finicky about shooting off of a hard surface when on the bi-pod. Bagging it up in front sometimes makes a huge difference for me.
I will say that the .300WM with increased recoil can be finicky about shooting off of a hard surface when on the bi-pod. Bagging it up in front sometimes makes a huge difference for me.
Re: 300 WM build
Nice, looked like your gun just hates the A-maxes. I had three accuracy nodes on the high end with the 208/H1000 combo.
I couldn't decide so I shot 10 round groups at 800 to see if it made a difference. 74.7, 76.8, and 78.2. Ended up going with the middle. 74 was accurate and a little slow, I think it had at least 4-8" more drop, hit 6/10 on a 6" swinger. 76.8 and 78.2 had the same drop but when that chamber hit right temperature the gun was not happy(6 on target, miss, miss, bigger miss, and finally heavy bolt lift) the middle load was a hammer hitting 9/10 with a close miss on round six or seven.
point I'm getting at is depending what your doing those other three loads could have some serious potential. oh yeah, whatcha gonna be doing with that thing?? comps, hunting or just making the steel miserable?
Nice, looked like your gun just hates the A-maxes. I had three accuracy nodes on the high end with the 208/H1000 combo.
I couldn't decide so I shot 10 round groups at 800 to see if it made a difference. 74.7, 76.8, and 78.2. Ended up going with the middle. 74 was accurate and a little slow, I think it had at least 4-8" more drop, hit 6/10 on a 6" swinger. 76.8 and 78.2 had the same drop but when that chamber hit right temperature the gun was not happy(6 on target, miss, miss, bigger miss, and finally heavy bolt lift) the middle load was a hammer hitting 9/10 with a close miss on round six or seven.
point I'm getting at is depending what your doing those other three loads could have some serious potential. oh yeah, whatcha gonna be doing with that thing?? comps, hunting or just making the steel miserable?
Re: 300 WM build
Goal # 1 is to grease a prarie dog at a 1000 or better.
Mostly, I built it because I didn't have a true long range rifle in the safe.
It's a beast of a rifle to shoot. I really like it.
Goal # 1 is to grease a prarie dog at a 1000 or better.
Mostly, I built it because I didn't have a true long range rifle in the safe.
It's a beast of a rifle to shoot. I really like it.
Re: 300 WM build
Very nice looking rifle. I am shooting the 210VLDs over H1000 with great results out of my 300WM...5 shots, 1 hole. I load them max length for the AI mags and have found they pretty damn near have the same great accuracy anywhere from 74-78grs...I guess it just depends how fast you want to push them. Good luck.
Very nice looking rifle. I am shooting the 210VLDs over H1000 with great results out of my 300WM...5 shots, 1 hole. I load them max length for the AI mags and have found they pretty damn near have the same great accuracy anywhere from 74-78grs...I guess it just depends how fast you want to push them. Good luck.
Re: 300 WM build
Thanks, man. The 300 WM seems to be pretty easy to work with. I was hoping that would be the case.
The "stencils" I used for the Durocoat were cut from 3 inch wide masking tape. I robbed the mirror off a discarded medicine cabinet. I cover it with the masking tape and go to town with a razor blade.
I used to do some pretty complicated camo patterns. I've come to appreciate simplicity.
Thanks, man. The 300 WM seems to be pretty easy to work with. I was hoping that would be the case.
The "stencils" I used for the Durocoat were cut from 3 inch wide masking tape. I robbed the mirror off a discarded medicine cabinet. I cover it with the masking tape and go to town with a razor blade.
I used to do some pretty complicated camo patterns. I've come to appreciate simplicity.
Re: 300 WM build
It looked to be 1/2 moa or better. Wish we would have had a few more minutes of daylight.
It looked to be 1/2 moa or better. Wish we would have had a few more minutes of daylight.
