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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity - setting up dies - runout
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<blockquote data-quote="boomtube" data-source="post: 507260" data-attributes="member: 9215"><p><em>"I think (hardened brass) depends on how much the brass case gets sized."</em></p><p> </p><p><strong>Exactly so. What that means of course is how much the brass gets cold worked each cycle. If we have a tight chamber and a loose sizer we have the best possible situaltion with common tools. The opposit situation will work a lot more and hardening will increase. When brass is hard it springs back more, both after firing (shrinks back more) and after resizing (re-expands more). All meaning that if we REALLY want to resize precisely we have to keep our cases segrated</strong> <strong> AND expect to make minute adjustments as we go. I get amused by posters who claim they adjusted their dies perfectly once and have never changed them; ah well, it's harmless foolishness!</strong></p><p> </p><p>(But don't let the gubbermint know you're 'segregating' anything, they would put you in jail before even trying to understand what the smell you're really doing! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" />)</p><p> </p><p> </p><p>Dig, you did stir up some good conversation, hope it has helped ground you a little better, not much of this will be found in a reloading manual. I'd suggest you look at the Sinclair concentricity gage. And get the lower cost dial indicator, it will do all any reloader needs done and do it well.</p></blockquote><p></p>
[QUOTE="boomtube, post: 507260, member: 9215"] [I]"I think (hardened brass) depends on how much the brass case gets sized."[/I] [B]Exactly so. What that means of course is how much the brass gets cold worked each cycle. If we have a tight chamber and a loose sizer we have the best possible situaltion with common tools. The opposit situation will work a lot more and hardening will increase. When brass is hard it springs back more, both after firing (shrinks back more) and after resizing (re-expands more). All meaning that if we REALLY want to resize precisely we have to keep our cases segrated[/B] [B] AND expect to make minute adjustments as we go. I get amused by posters who claim they adjusted their dies perfectly once and have never changed them; ah well, it's harmless foolishness![/B] (But don't let the gubbermint know you're 'segregating' anything, they would put you in jail before even trying to understand what the smell you're really doing! :rolleyes:) Dig, you did stir up some good conversation, hope it has helped ground you a little better, not much of this will be found in a reloading manual. I'd suggest you look at the Sinclair concentricity gage. And get the lower cost dial indicator, it will do all any reloader needs done and do it well. [/QUOTE]
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Concentricity - setting up dies - runout
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