Crimps the bullet firmly in place for the bottleneck cartridge
A firm crimp improves accuracy because pressure must build to a higher level before the bullet begins to move
Higher start pressure insures a more uniform pressure curve and less velocity variation
Durable and long lasting
Description
Lee 357 HERRETT Factory Crimp Die (custom over-run) 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.
