RCBS 20704 Roll Crimp 3-Die Set Group C .444 Marlin

The RCBS 20704 Roll Crimp 3-Die Set is a Group C full-length reloading die set purpose-built for the .444 Marlin straight-wall rifle cartridge. This three-die set pairs a hardened steel Sizer Die, an Expander Die, and a Seater Die with an integrated roll crimp, giving a handloader everything needed to run a complete resize-deprime, bell, and seat-crimp sequence on a single press.

The Sizer Die full-length resizes the case and de-primes the spent primer in one stroke. Because the .444 Marlin is a straight-wall case, RCBS recommends lubricating each case before sizing to keep drawing pressures smooth and to extend die life. The follow-up Expander Die bells and flares the case mouth so a new bullet seats cleanly without shaving jacket material, and the Seater Die drives the bullet to depth while applying a precise roll crimp, which is the conventional crimp style for straight-wall, tubular-magazine rifle cartridges such as .444 Marlin.

Group C is RCBS's designation for die sets covering straight-wall rifle cartridges where a dedicated roll-crimp seater is preferred over a taper crimp. All three dies use the industry-standard 7/8"-14 thread pattern so they drop into virtually any single-stage or turret reloading press. Built from hardened steel, the RCBS 20704 set delivers the durability and shot-to-shot consistency RCBS reloading tools are known for.