As stated above, the term "crimp" for auto pistol cartridges is misleading. You should only be removing the flare from belling the case, just enough to seat a new bullet. Run your finger over the lip of the case, and if you see or feel the case mouth is still flared outwards, "crimp" a little more.
”An unarmed man can only flee from evil, and evil is not overcome by fleeing from it.”
~Col. Jeff Cooper