Lee Precision Factory Crimp Die 356-358

Lee Precision  FACTORY CRIMP DIE 356-358 Free Postage RSA onlyPlease contact seller before making purchase   Lee 356-358 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..