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Rifles, Reloading, Optics, Equipment
Reloading
Case Trimming
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<blockquote data-quote="MagnumManiac" data-source="post: 1929395" data-attributes="member: 10755"><p>I measure my chambers neck length.</p><p>My comp barrels are normally around .040" longer than the max cartridge length...so I trim to be .005"-.010" of that length.</p><p>I anneal every firing and trim every sizing.</p><p></p><p>The worst case I have EVER worked with for case growth was the 375H&H...hence why I re-chambered to 375 Bee. Even after fire forming which SHRINKS the necks by .030" on average, the cases take a LONG time and many firings to grow back to even the trim length.</p><p></p><p>The AI's are similar to this too.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1929395, member: 10755"] I measure my chambers neck length. My comp barrels are normally around .040” longer than the max cartridge length...so I trim to be .005”-.010” of that length. I anneal every firing and trim every sizing. The worst case I have EVER worked with for case growth was the 375H&H...hence why I re-chambered to 375 Bee. Even after fire forming which SHRINKS the necks by .030” on average, the cases take a LONG time and many firings to grow back to even the trim length. The AI’s are similar to this too. Cheers. [/QUOTE]
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