The Redding Competition Bushing Neck Die Set (Part #58319) is a precision three-die reloading system engineered specifically for the 6mm PPC USA cartridge. Designed to minimize concentricity runout and preserve brass life, this mechanical tooling set utilizes internal sliding sleeves to guide and align the cartridge case before sizing and seating operations begin. Built with industry-standard 7/8"-14 threading, the set mounts directly to standard single-stage and turret reloading presses.

Key Features

• Micrometer-Adjustable Neck Sizing: Features a top-mounted micrometer graduated in 0.001" increments to precisely control the exact length of the case neck being sized.
• Concentric Alignment System: Internal floating sleeves support and align the case body and bullet prior to entering the neck sizing bushing or seating stem, reducing concentricity runout to near zero.
• Modular Three-Die Workflow: Includes a Competition Bushing Neck Sizing Die (Part #56319), a dedicated Body Die (Part #75319) for bumping the shoulder without touching the neck, and a Competition Bullet Seating Die (Part #55319).
• Shellholder Compatibility: Engineered for use with Redding Shellholder #12 (standard part #11012 or competition part #11612).

Specifications

• Calibre: 6mm P.P.C. USA (0.243" bullet diameter)
• Die Threading: 7/8"-14 thread
• Adjustment Increments: 0.001" micrometer graduations
• Standard Bushing Compatibility Range: 0.258" to 0.266"
• Die Set Contents: Competition Bushing Neck Die (#56319), Body Die (#75319), Competition Seating Die (#55319)
• System Weight: Approximately 0.9 kg to 1.1 kg
• Power Requirements: None (manual mechanical tooling)

Who is the Redding 58319 6mm PPC Competition Neck Die Set for?

• Precision benchrest shooters — who require micrometer-adjustable bullet seating and neck sizing graduated in 0.001" increments to produce competition-grade 6mm PPC USA ammunition with minimum concentricity runout.
• Handloaders loading for single bolt-action rifles — who need to tune neck tension using interchangeable bushings across the 0.258" to 0.266" standard range while utilizing a 7/8"-14 thread press interface to preserve fire-formed brass dimensions.

Less suitable for: Reloaders cycling ammunition through semi-automatic rifles or multiple disparate chambers requiring full-length sizing; a dedicated full-length sizing die or small-base sizing die set is better suited for those applications. Additionally, this set requires individual steel or titanium nitride neck bushings to be purchased separately based on brass wall thickness.