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Rifles, Reloading, Optics, Equipment
Reloading
Brass Trimming
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<blockquote data-quote="Kevin Thomas" data-source="post: 541308" data-attributes="member: 15748"><p>D Scott,</p><p> </p><p>Trimming is a safety issue for cases, not really an accuracy factor. You'll see cases being trimmed .010" to .015" below the SAAMI or CIP max lenghts listed, with virtually no difference in accuracy. The issue here is to keep the case mouth from being pinched into the bullet when chambering the round, thus kicking pressures up with potentially serious consequences. In most applications I can think of, aside from those where a crimp is involved, accuracy isn't affected in the slightest if the cases vary a bit, just so long as they're below that listed maximum. Don't get too hung up on this one, just keep 'em under that max length, and you're good.</p></blockquote><p></p>
[QUOTE="Kevin Thomas, post: 541308, member: 15748"] D Scott, Trimming is a safety issue for cases, not really an accuracy factor. You'll see cases being trimmed .010" to .015" below the SAAMI or CIP max lenghts listed, with virtually no difference in accuracy. The issue here is to keep the case mouth from being pinched into the bullet when chambering the round, thus kicking pressures up with potentially serious consequences. In most applications I can think of, aside from those where a crimp is involved, accuracy isn't affected in the slightest if the cases vary a bit, just so long as they're below that listed maximum. Don't get too hung up on this one, just keep 'em under that max length, and you're good. [/QUOTE]
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