Lee Precision, Inc. .32-40 Winchester Rifle Factory Crimp Die

The Lee .32-40 Winchester factory crimp die secures the bullet more firmly than any other tool. Tests indicate that even bullets lacking a crimp groove achieve greater accuracy. A firm crimp enhances accuracy by requiring pressure to reach a higher level before the bullet initiates movement. This increased starting pressure ensures a more consistent pressure curve and reduces velocity variation. Incorporates a collet mechanism that compresses the case mouth into the crimping groove to ensure a