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I have some FC 99 45 Auto Brass that I purchased in a mixed 1X fired lot. I decap the brass, and the next cap won't seat. It appears that there is a sleeve left in the primer pocket. The removed primer measure .20 while my new Rem primers measure .21. Any thoughts?
 

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Boss,

Sounds like the original primers were crimped. If so, the pockets need to be swaged or cut to size. If you have a lot of these cases, I'd get RCBS's swager for about $22. For just a few, a primer pocket uniforming tool would do the job.
 

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What Car Knocker said. Generally speaking, any brass that is head stamped "FC" along with a year designation (99) is usually mil-spec brass with crimped in primers.

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Regards,
AZFred
 
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