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Rifles, Reloading, Optics, Equipment
Reloading
Case trimming- how many times?
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<blockquote data-quote="Mikecr" data-source="post: 2437101" data-attributes="member: 1521"><p>Your thinking is right.</p><p>It's best to measure chamber end so that you can set desired chamber end clearance as necks close on it.</p><p>[URL unfurl="true"]https://www.sinclairintl.com/reloading-equipment/measuring-tools/case-gauges-headspace-tools/sinclair-chamber-length-gage-prod32925.aspx[/URL]</p><p>Carbon does build up in excess clearance, and you get sooting down necks, sometimes all the way down shoulders. This is gas blowing back interfering with case sealing.</p><p>A lot of people just trim to book, or to shortest in a batch. Neither is right. A good clearance is 10thou or less, provided you're watching and managing this.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2437101, member: 1521"] Your thinking is right. It's best to measure chamber end so that you can set desired chamber end clearance as necks close on it. [URL unfurl="true"]https://www.sinclairintl.com/reloading-equipment/measuring-tools/case-gauges-headspace-tools/sinclair-chamber-length-gage-prod32925.aspx[/URL] Carbon does build up in excess clearance, and you get sooting down necks, sometimes all the way down shoulders. This is gas blowing back interfering with case sealing. A lot of people just trim to book, or to shortest in a batch. Neither is right. A good clearance is 10thou or less, provided you're watching and managing this. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Case trimming- how many times?
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