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Rifles, Reloading, Optics, Equipment
Reloading
Cooper rifle won't chamber twice fired brass
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<blockquote data-quote="Arapaho" data-source="post: 1866740" data-attributes="member: 111801"><p>You may be pushing the shoulder back too far. Don't push it back to the size of a new, unfired case. Once fired in your chamber, measure shoulder on a fired case with your oal length gauge and calipers. Bump shoulder back only .002 thousands and then try to chamber a case. If you over size, you may be pushing all that brass back to where the die does not reach to size. Not to mention you are overworking your brass. If that does not work, it could be another issue such as out of spec chamber, causing chamber to allow case web to over expand and case web doesn't spring back like the neck. It could also be a sub standard die, see if you can borrow one to test. It could also be a hot load which is my least likely guess because your primer pocket in that caliber would likely suffer first. My guess is a combination of oversizing and your die. Good luck</p></blockquote><p></p>
[QUOTE="Arapaho, post: 1866740, member: 111801"] You may be pushing the shoulder back too far. Don't push it back to the size of a new, unfired case. Once fired in your chamber, measure shoulder on a fired case with your oal length gauge and calipers. Bump shoulder back only .002 thousands and then try to chamber a case. If you over size, you may be pushing all that brass back to where the die does not reach to size. Not to mention you are overworking your brass. If that does not work, it could be another issue such as out of spec chamber, causing chamber to allow case web to over expand and case web doesn't spring back like the neck. It could also be a sub standard die, see if you can borrow one to test. It could also be a hot load which is my least likely guess because your primer pocket in that caliber would likely suffer first. My guess is a combination of oversizing and your die. Good luck [/QUOTE]
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Cooper rifle won't chamber twice fired brass
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