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Hunting
Long Range Hunting & Shooting
338 lapua v. 338 edge
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<blockquote data-quote="long ranger" data-source="post: 183002" data-attributes="member: 800"><p>Based on volume of water to establish case capacity 9% is what we have gained in the 338 Edge to Edge AI</p><p>Doing the Lapua AI we gained 11% case capacity.</p><p>Bear in mind water is hard to get 100% back out of the casing, but is the closest I could come up with that was a medium of constant weight that would completely fill the casings.</p><p>In my opinion having the extra case capacity means being able to gain a few more fps with the bigger bullets.</p><p>Having the extra capacity did not seem to make any real difference when shooting 250 gr bullets, yes we gained velocity but the accuracy started to fall off.</p><p></p><p>The Lapua AI thrives on U.S.869 we found. In our rifles 111.5 gr behind a 300 gr SMK delivers the best accuracy and velocity, no pressure signs what so ever, even up to 114 gr</p><p> The AI chambering seems to keep the brass from growing, in my own rifle I have 9 reloadings out of the original Lapua brass, never has it been trimmed and it is still totally useable, so I will continue to use it. Every other loading I do bump the shoulder back 1 thou, just so the bolt will close easily.</p></blockquote><p></p>
[QUOTE="long ranger, post: 183002, member: 800"] Based on volume of water to establish case capacity 9% is what we have gained in the 338 Edge to Edge AI Doing the Lapua AI we gained 11% case capacity. Bear in mind water is hard to get 100% back out of the casing, but is the closest I could come up with that was a medium of constant weight that would completely fill the casings. In my opinion having the extra case capacity means being able to gain a few more fps with the bigger bullets. Having the extra capacity did not seem to make any real difference when shooting 250 gr bullets, yes we gained velocity but the accuracy started to fall off. The Lapua AI thrives on U.S.869 we found. In our rifles 111.5 gr behind a 300 gr SMK delivers the best accuracy and velocity, no pressure signs what so ever, even up to 114 gr The AI chambering seems to keep the brass from growing, in my own rifle I have 9 reloadings out of the original Lapua brass, never has it been trimmed and it is still totally useable, so I will continue to use it. Every other loading I do bump the shoulder back 1 thou, just so the bolt will close easily. [/QUOTE]
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338 lapua v. 338 edge
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