Lee - Factory Crimp Die - 300 Remington Ultra Magnum

Lee 300 ULTRA MAG & 300 H&H Factory Crimp Die crimps the bullet in place more firmly than any other tool.

Tests demonstrate that even bullets which have no crimp groove will shoot more accurately. A firm crimp improves accuracy because pressure must build to a higher level before the bullet begins to move.

This higher start pressure insures a more uniform pressure curve and less velocity variation.