The Redding 204 Ruger Competition Neck Die Set (MPN: 58287) is a precision three-die reloading system designed to maintain concentricity and precise neck tension for .204 Ruger ammunition. Engineered for fire-formed brass, this mechanical handloading tool utilises tight-tolerance internal sliding sleeves to align the cartridge case and projectile before sizing and seating strokes, eliminating runout and case neck stretch.

Key Features:

• Competition Bushing Neck Sizing Die: Employs a micrometer-adjustable top head to set the exact length of the case neck being sized, using a sliding chamber sleeve to support the cartridge and an expander-free design to prevent brass stretch.
• Dedicated Body Die: Restores critical case dimensions by sizing the body diameter and bumping the shoulder back without contacting or working the case neck.
• Competition Seating Die: Utilises a micrometer top graduated in 0.001" increments alongside a floating alignment sleeve that centres both the 0.204" bullet and the case before seating begins.
• Unpowered Mechanical Operation: Requires no electrical connections or external power supply, functioning entirely via standard manual reloading presses.

Specifications:

• Calibre Compatibility: .204 Ruger (0.204" bullet diameter)
• Press Thread Size: Industry-standard 7/8"-14 threaded die bodies
• Compatible Neck Bushing Sizes: 0.221" to 0.229" diameter (bushings sold separately)
• Shellholder Compatibility: Standard #10 shellholder (#11010) or Competition Shellholder #10 (#11610) (sold separately)
• Seating Adjustment: Micrometer adjustable in 0.001" increments
• Packaged Weight: Approximately 0.7 kg to 0.9 kg

Who is the Redding 204 Ruger Competition Neck Die Set for?

• Long-range precision shooters — Need consistent bullet seating depth and minimal runout, which this 204 Ruger competition neck die set delivers through a micrometer seating top graduated in 0.001" increments.
• Vermin and small game pest controllers — Require exact, repeatable neck tension across repeatedly fired brass for bolt-action rifles by sizing necks using 0.221" to 0.229" neck sizing bushings in industry-standard 7/8"-14 threaded die bodies.

Less suitable for: Reloading brand-new unfired factory brass or brass fired through semi-automatic rifles; these scenarios exceed neck-sizing limits and require a dedicated full-length sizer die to restore complete SAAMI case geometry.