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Rifles, Reloading, Optics, Equipment
Reloading
Cases seems to grow too much
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<blockquote data-quote="QuietTexan" data-source="post: 2724700" data-attributes="member: 116181"><p>Cases grow from sizing, not from shooting. If you size a case that rechambers, you are oversizing the brass too short. It's very simple, but if you don't pull your ejector spring AND the fire control group from the bolt you'll never actually know for sure where the headspace is. For some reason all these posts contain both "I bumped x.xxx" and the phrase "once-fired" in the same post, and every time the answer is don't bump the shoulders back early. </p><p> </p><p>Lance is right that the initial suck-back in case length from the initial blow out can be large, the wrinkle is that if you DON'T oversize for the 2nd to the ~3rd-5th firing and let the cases expand fully, you get less growth on subsequent sizings.</p><p></p><p>I'm at 4x firings on my current 243 AI and I've <em>never set the shoulders back.</em></p><p></p><p>Also it's a good idea to measure your actual chamber length with a Sinclair's gauge instead of guessing where you're at for length.</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2724700, member: 116181"] Cases grow from sizing, not from shooting. If you size a case that rechambers, you are oversizing the brass too short. It's very simple, but if you don't pull your ejector spring AND the fire control group from the bolt you'll never actually know for sure where the headspace is. For some reason all these posts contain both "I bumped x.xxx" and the phrase "once-fired" in the same post, and every time the answer is don't bump the shoulders back early. Lance is right that the initial suck-back in case length from the initial blow out can be large, the wrinkle is that if you DON'T oversize for the 2nd to the ~3rd-5th firing and let the cases expand fully, you get less growth on subsequent sizings. I'm at 4x firings on my current 243 AI and I've [I]never set the shoulders back.[/I] Also it's a good idea to measure your actual chamber length with a Sinclair's gauge instead of guessing where you're at for length. [/QUOTE]
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Reloading
Cases seems to grow too much
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