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Rifles, Reloading, Optics, Equipment
Reloading
cases streatching - headspace?
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<blockquote data-quote="Bart B" data-source="post: 840123" data-attributes="member: 5302"><p>I agree the firing pin drives the case forward until its shoulder stops against the chamber headspace point; chamber shoulder for rimless cases, rim or belt shoulder in the chamber for these.</p><p></p><p>I've fired dozens of live and dead primed empty rifle cases as well as near two dozen live and a dozen or more dead primed and bulleted rifle cases without powder in them. None of them had any evidence of the primer alone drive those bottleneck cases forward. Shoulder setback was the same across all of them. Those with bullets seated did not move the bullet at all from the live primer firing. And all the primers remained flush with the case head as they were when first primed.</p></blockquote><p></p>
[QUOTE="Bart B, post: 840123, member: 5302"] I agree the firing pin drives the case forward until its shoulder stops against the chamber headspace point; chamber shoulder for rimless cases, rim or belt shoulder in the chamber for these. I've fired dozens of live and dead primed empty rifle cases as well as near two dozen live and a dozen or more dead primed and bulleted rifle cases without powder in them. None of them had any evidence of the primer alone drive those bottleneck cases forward. Shoulder setback was the same across all of them. Those with bullets seated did not move the bullet at all from the live primer firing. And all the primers remained flush with the case head as they were when first primed. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
cases streatching - headspace?
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