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Hunting
Long Range Hunting & Shooting
delemma...what 338 chambered rifle to start with?
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<blockquote data-quote="Brent" data-source="post: 8708" data-attributes="member: 99"><p>PSI and case head diameter determine bolt thrust, bullet weight makes NO difference what so ever, and Darryl has been told this. 50gr and a 500gr bullets at 70k psi will pruduce the SAME thrust on the bolt. <img src="http://images/icons/wink.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p></p><p>If I dropped my powder charge by 5.5gr like that, I'd hope for AT LEAST 5 more loadings too. <img src="http://images/icons/grin.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> Heck, that'd be a starting load.</p><p></p><p>I've run the same pressure (70k psi) on about 10% of my cases for a total of 4 loadings now and have felt slight resistance opening the bolt only this last time out on a few of them. The other 90% of the cases I'm using have had a few mild loads through them but mainly mid to high to hot loads, and I can tell no difference between any of them, and unless I overexpand the caseheads and they get tight on me, these cases will last a long **** time at this pressure. </p><p></p><p>Interesting, when I ran up another 7gr in the 30-338 Lapua Imp using Retumbo and a 210gr JLK, 90gr to 97gr, I gained 352 fps...</p></blockquote><p></p>
[QUOTE="Brent, post: 8708, member: 99"] PSI and case head diameter determine bolt thrust, bullet weight makes NO difference what so ever, and Darryl has been told this. 50gr and a 500gr bullets at 70k psi will pruduce the SAME thrust on the bolt. [img]images/icons/wink.gif[/img] If I dropped my powder charge by 5.5gr like that, I'd hope for AT LEAST 5 more loadings too. [img]images/icons/grin.gif[/img] Heck, that'd be a starting load. I've run the same pressure (70k psi) on about 10% of my cases for a total of 4 loadings now and have felt slight resistance opening the bolt only this last time out on a few of them. The other 90% of the cases I'm using have had a few mild loads through them but mainly mid to high to hot loads, and I can tell no difference between any of them, and unless I overexpand the caseheads and they get tight on me, these cases will last a long **** time at this pressure. Interesting, when I ran up another 7gr in the 30-338 Lapua Imp using Retumbo and a 210gr JLK, 90gr to 97gr, I gained 352 fps... [/QUOTE]
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delemma...what 338 chambered rifle to start with?
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