The Redding 58446 Competition Neck Die Set is a dedicated 3-die mechanical reloading system designed for precision handloading of the 6.5 Creedmoor cartridge (.264" bullet diameter). Engineered for standard reloading presses using an industry-standard 7/8"-14 thread, this set sizes case necks, resizes case bodies, and seats projectiles with benchrest-grade alignment. The set includes a Competition Bushing Neck Sizing Die (Part #56446), a Body Die (Part #75446), and a Competition Bullet Seating Die (Part #55446) to optimise brass life, maintain fire-formed case geometry, and minimise total cartridge runout.

• Precision Micrometer Adjustment: Both the Competition Bushing Neck Sizing Die and the Competition Bullet Seating Die feature top-mounted micrometer heads calibrated in direct 0.001" graduations for repeatable depth and bushing position control.
• Internal Sliding Alignment Sleeves: Precision-ground sliding sleeves fully support and align the 6.5 Creedmoor case before sizing or bullet seating begins, maximising concentricity.
• Interchangeable Bushing Design: The neck sizing die accepts interchangeable Redding standard neck sizing bushings (typically ranging from .285" to .293", sold separately) to precisely control neck tension without overworking brass.
• Dedicated Body Sizing: Includes a standalone body die that resizes the case body and bumps the shoulder back without touching the case neck.
• Universal Press Interface: Machined with standard 7/8"-14 threading to fit conventional single-stage and turret reloading presses.

Specifications

• Calibre Compatibility: 6.5 Creedmoor (.264" bullet diameter)
• Press Threading: Standard 7/8"-14 thread
• Set Contents: Competition Bushing Neck Die (#56446), Body Die (#75446), Competition Seating Die (#55446)
• Adjustment Increments: 0.001" micrometer graduations
• Shellholder Compatibility: Standard #1 Shellholder or Redding Competition Shellholder Set (sold separately)
• Bushing Range Compatibility: Accepts standard Redding bushings (.285" to .293" typical for 6.5 Creedmoor, sold separately)
• Power Requirements: Manual operation (non-powered mechanical tool)

Who is the Redding 58446 Competition Neck Die Set for?

• Precision Rifle Competitors (PRS and F-Class) — Requires sub-MOA consistency and minimal projectile runout, utilising the micrometer-adjustable seating and neck dies calibrated in exact 0.001" graduations to tune .264" bullet seating depth and neck tension.
• Extreme-Range Target Shooters — Demands maximum concentricity across repeatedly fired fire-formed brass using internal sliding sleeves on standard 7/8"-14 thread single-stage presses.
• Precision Bolt-Action Hunters — Needs tailored handloads for specific 6.5 Creedmoor (.264" bullet diameter) rifle chambers while extending brass lifespan by sizing only the neck and bumping shoulders as required via the dedicated body die.

Less suitable for: Semi-automatic rifles (such as AR-10 platforms) or high-stress hunting scenarios requiring guaranteed cycling and chambering clearance; high-reliability autoloading applications are better served by a full-length Type-S bushing die or small-base sizing die set.