Lee Precision, Inc. 6mm ARC Rifle Factory Crimp Die

The Lee 6mm ARC 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 secure hol