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Lee Factory Crimp Die 6.5x55
Lee 6.5X55 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.
The Lee Factory Crimp Die for the 6.5x55 is designed to ensure that each round of reloaded ammunition has the ideal crimp. The Factory Crimp Die crimps the bullet firmly in place with more uniform pressure than any other die. A collet on the Factory Crimp Die squeezes the case mouth into the crimping groove for a secure hold. This is the same crimp seen on manufacturing ammunition. When crimping with a normal roll crimp die, it is practically impossible to buckle the case. According to Lee's research, employing a Factory Crimp Die produces a more consistent pressure curve, which improves bullet accuracy.