LEE – Factory Crimp Die 45-70 Gov

Lee 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 ensures a more uniform pressure curve and less velocity variation.

Incorporates a collet to apply a rifle-type crimp to the case. Makes even the most difficult-to-crimp cartridges a delight to reload. Bullets do not need a crimp groove, as the collet is so powerful it will form one. A firm crimp improves accuracy because pressure must build to a higher level before the bullet begins to move. This higher start pressure ensures a more uniform pressure curve and less velocity variation. NOTE: This die is not carbide.