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Rifles, Reloading, Optics, Equipment
Reloading
Primer Pocket Uniforming
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<blockquote data-quote="Mikecr" data-source="post: 1253038" data-attributes="member: 1521"><p>I don't think there has been any testing done -that has been published (just local).</p><p></p><p>Uniforming can't hurt, and depending on your seating system and the brass itself(of course), it could make a big difference. For instance, let's say you seat primers to flush with the casehead. Then varying depths of pocket could certainly mean the firing pin would have to finish primer seating. Even beyond the affect of this to primer function, it could be thought of in terms of variable striking, or variable lock time, or variable striking force. Any are well known to degrade results.</p><p></p><p>I seat to a given crush in same depth pockets. Since primers themselves vary in height, I have this variance to manage. I do so by tossing primers departing from mean by more than +/- a couple thou.</p><p>Also, none of this reaches all the way to misfires. I'm talking about accuracy, and not reliability.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1253038, member: 1521"] I don't think there has been any testing done -that has been published (just local). Uniforming can't hurt, and depending on your seating system and the brass itself(of course), it could make a big difference. For instance, let's say you seat primers to flush with the casehead. Then varying depths of pocket could certainly mean the firing pin would have to finish primer seating. Even beyond the affect of this to primer function, it could be thought of in terms of variable striking, or variable lock time, or variable striking force. Any are well known to degrade results. I seat to a given crush in same depth pockets. Since primers themselves vary in height, I have this variance to manage. I do so by tossing primers departing from mean by more than +/- a couple thou. Also, none of this reaches all the way to misfires. I'm talking about accuracy, and not reliability. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Primer Pocket Uniforming
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