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Old 08-31-2012, 20:50   #104
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Join Date: Nov 2006
Location: CO
Posts: 14,689
10mm has slightly thicker case so it is possible to swage the bullet and reduce neck tension in the process. I measured it with my FCD. Also Lee's basically instructions for the FCD lead to too much crimp. So you do have that as a possibility. Especially if you did the "add a complete turn" thing.

Ignore Text Size....posting from a phone.
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