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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
chamber size, brass, neck turning and clearances
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<blockquote data-quote="Mikecr" data-source="post: 699324" data-attributes="member: 1521"><p>#1 you can't measure neck thickness accurately with that setup.</p><p>#2 with both those cartridges, you're gonna have so much runout and pushed/trimmed away brass from sizing the case bodies, that turning won't begin to help.</p><p>There won't be ANY gains in neck turning these.</p><p></p><p>You'd be better to get a neck mic, and cull your brass to use those ~15thou thick mid neck and with little natural variance.</p><p>.308+.030 = .338, your fired brass from a .341NK chamber will springback to ~.340.</p><p>This you can size with a bushing without over working necks, and since the thickness variance throughout the body length is consistant, your sized brass will stay straighter longer.</p><p></p><p>As far as accuracy,, it will amount to what is sustained in the long run.</p><p>That is, a working combination that is upset with mutated/overworked brass every 4-5 reloads, is not really a working combination.</p><p>And if your 1000yd goal is based on competitive format, you might breeze through IBS equipment lists to see little to no 30-06s or 7RMs (for reasons stated).</p></blockquote><p></p>
[QUOTE="Mikecr, post: 699324, member: 1521"] #1 you can't measure neck thickness accurately with that setup. #2 with both those cartridges, you're gonna have so much runout and pushed/trimmed away brass from sizing the case bodies, that turning won't begin to help. There won't be ANY gains in neck turning these. You'd be better to get a neck mic, and cull your brass to use those ~15thou thick mid neck and with little natural variance. .308+.030 = .338, your fired brass from a .341NK chamber will springback to ~.340. This you can size with a bushing without over working necks, and since the thickness variance throughout the body length is consistant, your sized brass will stay straighter longer. As far as accuracy,, it will amount to what is sustained in the long run. That is, a working combination that is upset with mutated/overworked brass every 4-5 reloads, is not really a working combination. And if your 1000yd goal is based on competitive format, you might breeze through IBS equipment lists to see little to no 30-06s or 7RMs (for reasons stated). [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
chamber size, brass, neck turning and clearances
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