Hornady Expander Taper Crimp Die removes the flare from the case mouth and crimps the case mouth around the bullet while maintaining a sharp edge for proper headspace. Improves feeding of reloaded cases in semiautomatic handguns. How do you get more taper crimp: Loosen the seater adjustment screw (very top milled piece) about three times. Loosen the lock ring on the crimp adjustment screw (middle) and back it out about three turns. Tighten the crimp adjustment screw down until you have the correct crimp. After you have made the adjustment, lock the lock ring and reset your bullet seater adjustment screw to the correct seating depth