The 3-Die Roll Crimp Set is for loading straight-wall cartridges. Its steel Sizer Die sizes the case and de-primes. Note: Cases must be lubricated. The Expander Die expands the case to the proper diameter to accept the bullet and it imparts case mouth flare/bell for bullet feeding. The Seater Die seats the bullet and roll crimps.

Features:

• Features a hardened steel Sizer Die (case lubrication required)
• Expander Die to properly expand case to accept bullets
• Roll Crimp Seat Die to crimp case to bullet to eliminate bullet movement
• Comes in a Green Box
• All RCBS dies are machined to exacting tolerances hardened and finished to the highest standards in the industry