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Rifles, Reloading, Optics, Equipment
Reloading
How to measure shoulder bump without rcbs precision mic?
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<blockquote data-quote="25WSM" data-source="post: 1896903" data-attributes="member: 38048"><p>The reasoning behind .002 to.003 is because you get various spring backs on your sized cases. If you only do .001 and the brass stays perfectly put your good. But if it springs back then it's not going to have clearence. Anytime you feel the bolt closing hard on a brass there is going to be verticle in your group. By going to .002 or .003 you still have clearence if you get a few cases that spring back a little. I always use.003 myself. I know a current world record holder that bumps .008. he likes his brass loose.</p><p>It obviously works for him.</p><p>Shep</p></blockquote><p></p>
[QUOTE="25WSM, post: 1896903, member: 38048"] The reasoning behind .002 to.003 is because you get various spring backs on your sized cases. If you only do .001 and the brass stays perfectly put your good. But if it springs back then it's not going to have clearence. Anytime you feel the bolt closing hard on a brass there is going to be verticle in your group. By going to .002 or .003 you still have clearence if you get a few cases that spring back a little. I always use.003 myself. I know a current world record holder that bumps .008. he likes his brass loose. It obviously works for him. Shep [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How to measure shoulder bump without rcbs precision mic?
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