The Redding Competition Bushing Neck Die Set for 7mm Winchester Short Magnum (7mm WSM) is a precision, three-piece reloading die system engineered for match-grade handloading. Built for standard 7/8"-14 threaded reloading presses, this set provides complete case management through a modular three-die approach consisting of a Competition Bushing Neck Sizing Die, a dedicated Body Die, and a Competition Bullet Seating Die. The system delivers precise control over neck tension and seating depth while minimising total indicated runout.

Key Features:

• Competition Bushing Neck Sizing Die: Employs a sliding internal sleeve that centres the cartridge body before the neck contacts the bushing, with a micrometer head calibrated in 0.001" increments to set the precise length of the sized neck.
• Dedicated Body Die: Full-length resizes the case body and bumps the shoulder back to restore chambering clearance without contacting or working the case neck.
• Competition Bullet Seating Die: Features a floating sleeve and seating stem assembly with an infinitely adjustable micrometer calibrated in 0.001" increments and zero-set capability for precise bullet seating depth.
• Runout Reduction: Internal alignment sleeves support and rigidly align the case and projectile to maintain concentricity throughout sizing and seating operations.

Specifications:

• Calibre Compatibility: 7mm Winchester Short Magnum (7mm WSM / .284" bullet diameter)
• Press Threading: Standard 7/8"-14 threads
• Included Dies: Competition Bushing Neck Sizing Die, Body Die, Competition Bullet Seating Die
• Adjustment Graduations: 0.001" micrometer increments on neck sizing and bullet seating dies
• Operation: Manual workshop mechanical tooling (no electrical power required)
• Required Separately: Redding sizing bushings and calibre-specific #6 shellholder

Who is the Redding Competition Neck Die Set for 7mm WSM for?

• Long-range precision shooters loading 7mm WSM ammunition — Handloaders needing exact control over internal ballistics can dial in custom neck tension and seating depth in 0.001" increments using this competition neck die set, preserving fire-formed case geometry across repeated firings.
• F-Class and benchrest competitors seeking minimum cartridge runout — Competitors requiring straight cartridges benefit from the sliding internal alignment sleeves in this competition neck die set, which rigidly align the 7mm WSM case and .284" bullet on standard 7/8"-14 threaded reloading presses to minimise total indicated runout.

Less suitable for: Handloaders feeding semi-automatic platforms, hunting in adverse conditions, or sharing loaded 7mm WSM ammunition across multiple distinct rifles, where neck-sized fire-formed brass can cause chambering resistance; a dedicated full-length sizing die set or Type S full-length bushing die is better suited to ensure reliable feeding.