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Message: <blockquote data-quote="panayoti01" data-source="post: 1139583" data-attributes="member: 433">you only need enough crimp to keep the bullet from getting set back during feeding and recoil effect when the round is in the mag. i scribe a line on the bullet after seating and crimp. push agains the bench with your thumb. it shouldn't move. you might try backing off the die a shade and check for movement. bullet set back can increase chamber pressure in 9mm. (it can in any caliber but 9mm is more suseptable due to higher pressures and small case capacity)</blockquote>