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Rifles, Reloading, Optics, Equipment
Reloading
Acceptable variance/runout???
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<blockquote data-quote="rcoody" data-source="post: 1287117" data-attributes="member: 91090"><p>That is exactly right.</p><p></p><p> The truth is that 1 thousandth shoulder bump is all about brass life. Measure your.fired brass and a factory loaded round. You will be.suprised at the difference. </p><p></p><p>Now not bumping the shoulder like the.neck sizing crowd will soon bring you to rounds that are hard to chamber.</p><p></p><p>New brass may not fully fireform to your chamber on the.first firing. This may be some of the variations you see in your fired brass. After 3 firings with a .001 shoulder bump those fired cases should be identical. That is if all the brass is the same headstamp and number of firings.</p><p></p><p>All this gets very complicated very quickly when you go down the rabbit hole.</p></blockquote><p></p>
[QUOTE="rcoody, post: 1287117, member: 91090"] That is exactly right. The truth is that 1 thousandth shoulder bump is all about brass life. Measure your.fired brass and a factory loaded round. You will be.suprised at the difference. Now not bumping the shoulder like the.neck sizing crowd will soon bring you to rounds that are hard to chamber. New brass may not fully fireform to your chamber on the.first firing. This may be some of the variations you see in your fired brass. After 3 firings with a .001 shoulder bump those fired cases should be identical. That is if all the brass is the same headstamp and number of firings. All this gets very complicated very quickly when you go down the rabbit hole. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Acceptable variance/runout???
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