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Rifles, Reloading, Optics, Equipment
Reloading
Lee Neck sizing collet die and neck tension?
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<blockquote data-quote="Bart B" data-source="post: 1143324" data-attributes="member: 5302"><p>Crimping bullets increases muzzle velocity spread by increasing bullet release force spread. It also unbalanced bullets. </p><p></p><p>Sierra Bullets observed this testing their stuff for accuracy decades ago. Which is why they don't crimp any of their bullets now; even those with cannelures in them. Such mutilations render bullets less accurate. Easily seen shooting sub 1/2 MOA 10-shot groups at 200 yards indoors with rail guns. Cannelured and crimped in bullets don't produce best accuracy.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1143324, member: 5302"] Crimping bullets increases muzzle velocity spread by increasing bullet release force spread. It also unbalanced bullets. Sierra Bullets observed this testing their stuff for accuracy decades ago. Which is why they don't crimp any of their bullets now; even those with cannelures in them. Such mutilations render bullets less accurate. Easily seen shooting sub 1/2 MOA 10-shot groups at 200 yards indoors with rail guns. Cannelured and crimped in bullets don't produce best accuracy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Lee Neck sizing collet die and neck tension?
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