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Long Range Hunting & Shooting
338/378 wby vs 338LM
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<blockquote data-quote="4xforfun" data-source="post: 251409" data-attributes="member: 9172"><p>I did some load development for a friend of mine who had an AR 30. My first thought was "why N L would anyone want one????.....SUPRISE!!!! It was a real shooter. It never shot a group over 1 inch at 100 (3 shot groups) during breakin-load development, and I think the final load came in at around a half inch. It was a freakin chimney to clean during break in, but got much easier to clean at around 100 rounds. It ended up with moderate loads of H1000 behind a 250 SMK. I wish I had tried 300 gr MK. I was under the impression that it had a 1-12 twist....WRONG......1-10..... 300's would have worked very well is my guess!</p><p> </p><p>The only problem I have found is that after the 2nd firing it is starting to split some necks. I don't have a clue why. The loads are mild and I am a ZIT when it comes to gunsmithing.<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" /> He has another lapua built on a weatherby action by Clay Spencer. No problems with that one!! My guess is there is a chamber issue with the AR.</p></blockquote><p></p>
[QUOTE="4xforfun, post: 251409, member: 9172"] I did some load development for a friend of mine who had an AR 30. My first thought was "why N L would anyone want one????.....SUPRISE!!!! It was a real shooter. It never shot a group over 1 inch at 100 (3 shot groups) during breakin-load development, and I think the final load came in at around a half inch. It was a freakin chimney to clean during break in, but got much easier to clean at around 100 rounds. It ended up with moderate loads of H1000 behind a 250 SMK. I wish I had tried 300 gr MK. I was under the impression that it had a 1-12 twist....WRONG......1-10..... 300's would have worked very well is my guess! The only problem I have found is that after the 2nd firing it is starting to split some necks. I don't have a clue why. The loads are mild and I am a ZIT when it comes to gunsmithing.:D He has another lapua built on a weatherby action by Clay Spencer. No problems with that one!! My guess is there is a chamber issue with the AR. [/QUOTE]
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338/378 wby vs 338LM
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