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Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing
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<blockquote data-quote="Mikecr" data-source="post: 828423" data-attributes="member: 1521"><p>I don't believe you Bart</p><p>I checked and none of my cartridges change in headspace on primer strike & firing.</p><p>And you're forgetting runout. TIR would just as likely prevent 'perfect centering' of chambering. It would also likely cause a case to flinch into abstract fitting of the chamber on firing.</p><p>Do your cases also straighten out(drop in TIR) from primer firing?</p><p>NOPE</p><p></p><p>If your cartridges are changing in HS on primer firing alone, it simply indicates very low shoulder angles, and/or excessive striker settings. This doesn't apply to better designed modern cartridges and correctly timed/tuned actions.</p><p></p><p>As far as an ejector plunger pushing a case forward from boltface, you gotta know this is an angled push, and counter to a well fitting extractor. Bad for centering.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 828423, member: 1521"] I don't believe you Bart I checked and none of my cartridges change in headspace on primer strike & firing. And you're forgetting runout. TIR would just as likely prevent 'perfect centering' of chambering. It would also likely cause a case to flinch into abstract fitting of the chamber on firing. Do your cases also straighten out(drop in TIR) from primer firing? NOPE If your cartridges are changing in HS on primer firing alone, it simply indicates very low shoulder angles, and/or excessive striker settings. This doesn't apply to better designed modern cartridges and correctly timed/tuned actions. As far as an ejector plunger pushing a case forward from boltface, you gotta know this is an angled push, and counter to a well fitting extractor. Bad for centering. [/QUOTE]
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