Thread: Shoulder Bump Advice

Clear but perhaps not relevant GPM if the OP has brass that has been used several times, and is brittle.

You size it down based on individual rifle chamber specs and then alter the specs as you almost flip the bench over trying to get the case out of the fls die. The brass is now over size. A bit of lube and some annealing fixes this.

I’ve had it happen with both .270 and .257 AI brass.


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