The Redding Competition Bushing Neck Die Set (MPN: 58317) is a precision 3-die system engineered for reloading 6mm BR Remington match brass. Featuring standard 7/8"-14 threading, this set includes a Competition Bushing Neck Sizing Die, a dedicated Body Die, and a Competition Bullet Seating Die. Both the neck sizing and seating dies utilise precision-ground floating sleeves to capture and align the case prior to sizing or seating, minimising bullet runout and ensuring tight concentricity across fire-formed cases fired in bolt-action chambers.

Key Features

• Micrometer Precision Adjustments: The competition neck die and competition seating die incorporate micrometers calibrated in 0.001" increments for precise control over neck sizing depth and bullet seating depth.
• Concentric Alignment: Floating sliding sleeves support and center the cartridge case entirely before the neck bushing or seating stem engages the brass.
• Modular Bushing Design: Accepts interchangeable Redding neck sizing bushings (commonly 0.260" to 0.268" for 6mm BR, sold separately) to set exact neck tension without overworking case necks.
• Three-Die Architecture: Includes a dedicated Body Die to bump case shoulders and resize the cartridge body without contacting the neck, isolating brass movement across separate operations.

Product Specifications

• Calibre Compatibility: 6mm BR Remington (6mm / .243 in bullet diameter)
• Thread Standard: 7/8"-14 standard reloading press threading
• Adjustment Resolution: 0.001-inch increments via top-mounted micrometers
• Die Set Contents: Competition Bushing Neck Sizing Die, Body Die, Competition Seating Die
• Shellholder Compatibility: Standard #1 shellholder (Part #11001) or Competition Shellholder #1 (Part #11601); shellholders not included
• Bushings Required: Redding Sizing Bushings (sold separately)

Who is the Redding 6mm BR Remington Competition Neck Die Set for?

• Benchrest precision handloaders — requires the 0.001" micrometer adjustments and floating alignment sleeve of this 6mm BR neck die set to minimise concentricity runout and precisely regulate neck tension on match brass.
• F-Class and PRS long-range target shooters — relies on the standard 7/8"-14 reloading press threading and dedicated body die to manage shoulder bump while maintaining tight 0.001-inch seating depth consistency for 6mm BR Remington match rifles.

Less suitable for: Handloaders preparing brass for semi-automatic actions or multiple mixed-chamber rifles requiring full-length resizing on every firing cycle (where a standard full-length sizing die set is better suited), or those loading high-BC VLD projectiles without acquiring a dedicated VLD seating stem.