RCBS Group C 3-Die Taper Crimp Set Features The RCBS Group C set handles the full reloading sequence for straight-walled .400 Legend cases starting with a hardened steel sizer die that returns fired brass to proper dimensions while depriming it in the same step. Because the cartridge is straight-walled rather than bottlenecked cases must be lubricated before sizing to prevent them from sticking in the die a detail reloaders should plan for in their process. The expander die follows opening the case mouth to the correct diameter and imparting the case mouth flare that allows a new bullet to seat without shaving lead or jacket material. This staged approach keeps each die doing one job well rather than compromising accuracy by combining steps. The seater die completes the set seating the bullet to the correct depth while applying a taper crimp that locks the bullet in place and sets proper cartridge headspacing for reliable chambering. Unlike a roll crimp a taper crimp suits straight-walled cases without a cannelure making it the correct choice for this cartridge type. All three dies are machined to the tight tolerances RCBS is known for hardened and finished to a standard reloaders have relied on for decades. Packaged in RCBS s green storage box and made in the USA this Group C taper crimp die set is available for sale at GrabAGun for handloaders working up loads for .400 Legend. RCBS Group C 3-Die Taper Crimp Set Specifications Manufacturer: RCBS Model: Group C Caliber: .400 Legend Die Type: 3-Die Taper Crimp Set Case Material: Hardened Steel Gun Type: Rifle Includes: Green Storage Box Available At: GrabAGun