Don't resize a case using a regular sizing die with the bullet in the case. Why? The brass will spring back and the lead won't, thus leaving the bullet loose. The sizing die is intended to make a press fit between the case and bullet, which must be done before the bullet is inserted.
Check that your loaded cartridges are straight, and the crimp is just sufficient to completely remove the flare.
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Last edited by OKFC05; 12-10-2015 at 01:20 PM.
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