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Old July 4, 2012, 05:21 PM   #8
Senior Member
Join Date: May 3, 2009
Location: Central Texas
Posts: 3,364
Try turning the sizing die down in half turn increments, and skip the crimping. See if they chamber easily. Note do not use the Collet Neck Sizing die with a semi auto. All rounds for semi Auto must be FL resized.

With the turing the die down till the rounds chamber easily. Now take a batch to the range uncrimped. Fire one round extrac the next round do this with 5 rounds. Measure the extracted rounds. If they measure to within +/- .002 skip crimping. If they are longer then crimping may be needed.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.
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