The RCBS Matchmaster Competition Full Length Bushing Die Set (6mm Creedmoor, Model R31808) is a specialized, purely mechanical reloading toolset designed for extreme-accuracy ammunition production. Engineered specifically for the 6mm Creedmoor cartridge, this premium die set comprises a bushing-style full-length sizing die and a micrometer-adjustable bullet seating die. Operating on a standard 7/8"-14 thread pitch, it integrates seamlessly into standard reloading setups to deliver exacting control over case dimensions, neck tension, and bullet alignment.

Key Features

• Bushing-Style Sizing: Utilizes interchangeable, self-centering neck bushings (sold separately) to let handloaders control neck tension precisely, preventing over-working of the 6mm Creedmoor brass.
• Titanium Nitride Expander: Features a TiN/TiCN-coated expander ball that minimizes friction and neck stretching during the extraction stroke, eliminating the need for heavy inside-neck lubrication.
• Bullet Seating Window: Includes a machined side-loading window that allows handloaders to slide the projectile directly into the die, where an internal retention sleeve aligns it perfectly concentric with the case mouth.
• Micrometer Seating Head: Features a large, highly visible dial with laser-etched markings that adjusts seating depth in exact 0.001-inch increments.

Product Specifications

• Brand: RCBS
• Model Number: R31808
• Calibre: 6mm Creedmoor
• Thread Interface: 7/8"-14 TPI
• Adjustment Increments: 0.001 inches per graduation
• Shipping Weight: 0.68 kg
• Shipping Dimensions: 152 mm (L) x 114 mm (W) x 51 mm (H)
• Compatible Shell Holder: RCBS Shell Holder #3 (sold separately)
• Material Composition: Case-hardened steel body, hand-polished internal surfaces, and black oxide exterior finish

Who is the Rcbs 6mm Creedmoor Matchmaster Competition Full Length Die Set for?

• 6mm Creedmoor precision long-range shooters — requiring precise control over seating depth down to 0.001-inch increments to tune their cartridges to their specific rifle chambers.
• Benchrest competitors reloading 6mm Creedmoor — who require a bushing-style sizing system on standard 7/8"-14 thread presses to minimize neck runout and optimize neck tension for extreme shot-to-shot consistency.

Less suitable for: Owners of the RC (Rock Chucker) Supreme reloading press using specific configurations or primer catchers that physically interfere with the oversized micrometer head; these users are better served by a low-profile, non-micrometer seating die set.