The Lee Factory Crimp Die - 375 H&H  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.
 
Features
Crimps the bullet in place
Improves accuracy
Insures a more uniform pressure curve and less velocity variation
 
Specifications
Weight
0.20 kg