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Extreme Long Range Hunting & Shooting (ELR)
375 DCM Lite
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<blockquote data-quote="Kiwi Greg" data-source="post: 866582" data-attributes="member: 13456"><p>Thanks.</p><p> </p><p>I have built a couple of 375 Terminators, 375 Lapua Improved, on the big Barnard P-Chey actions with 32" Bartlein gain twist barrels, they go exceptionally well with the Cutting Edge projectiles not far behind the 375 Cheytac with only 111-114 grains of powder, but as the projectiles are so long mag length rounds just won't work.</p><p> </p><p>I didn't do much at all with the SMK in those rifles as the 7.8 & 8 exit twists are a little hard on the jackets.</p><p> </p><p>I also built a 375 Rum imp on a Rem 700 with a 30" 1-11.5 barrel for S&Gs.</p><p>It shot the 350 SMK at approx 2825fps & 330 CEs approx 2925fps with under 110 grains of powder, it was long throated & once again no way it would mag feed. </p><p> </p><p>The Aussies are building a few over there, they call them the 375 Sledgehammer, they should have info on mag feeding etc, I think one was going in a DTA <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p> </p><p>One thing to consider is the recoil is pretty brisk <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p> </p><p>The small efficient cases are a bit of a problem because you can build a light weight rifle that will push a fairly big projectile reasonably fast with relatively small amounts of gas velocity & volume so the muzzle brake has very little to work with.</p><p> </p><p>I re-chambered a light 700 338 Win mag to 338 Edge then even bigger again on the same short barrel, the difference between the Edge & its bigger cousin was 300 fps & around 25 grains of powder. </p><p> </p><p>I didn't test it but recoil appeared to stay the same, it certainly didn't increase noticeably, the brake was loving it with all that gas pressure, volume & velocity <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="Kiwi Greg, post: 866582, member: 13456"] Thanks. I have built a couple of 375 Terminators, 375 Lapua Improved, on the big Barnard P-Chey actions with 32" Bartlein gain twist barrels, they go exceptionally well with the Cutting Edge projectiles not far behind the 375 Cheytac with only 111-114 grains of powder, but as the projectiles are so long mag length rounds just won't work. I didn't do much at all with the SMK in those rifles as the 7.8 & 8 exit twists are a little hard on the jackets. I also built a 375 Rum imp on a Rem 700 with a 30" 1-11.5 barrel for S&Gs. It shot the 350 SMK at approx 2825fps & 330 CEs approx 2925fps with under 110 grains of powder, it was long throated & once again no way it would mag feed. The Aussies are building a few over there, they call them the 375 Sledgehammer, they should have info on mag feeding etc, I think one was going in a DTA :) One thing to consider is the recoil is pretty brisk :) The small efficient cases are a bit of a problem because you can build a light weight rifle that will push a fairly big projectile reasonably fast with relatively small amounts of gas velocity & volume so the muzzle brake has very little to work with. I re-chambered a light 700 338 Win mag to 338 Edge then even bigger again on the same short barrel, the difference between the Edge & its bigger cousin was 300 fps & around 25 grains of powder. I didn't test it but recoil appeared to stay the same, it certainly didn't increase noticeably, the brake was loving it with all that gas pressure, volume & velocity :D [/QUOTE]
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375 DCM Lite
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