The Redding 58155 Competition Bushing Neck 3-Die Set is a precision mechanical reloading system engineered specifically for .308 Winchester cartridge cases using 0.308" diameter bullets. Designed to minimize runout and extend brass working life, the set includes a micrometer-adjustable Competition Bushing Neck Sizing Die, a dedicated Body Die, and a micrometer-adjustable Competition Bullet Seating Die. Built with standard 7/8"-14 threading, these dies mount directly into standard single-stage and turret reloading presses without requiring electrical power.

Key Features

• Micrometer Neck Sizing: Utilizes an internal sliding sleeve to align and support the cartridge case before sizing, allowing precise micrometer control over the exact length of the case neck being sized.
• Customisable Neck Tension: Accepts interchangeable steel or titanium nitride bushings (sold separately, typically 0.333" to 0.341") to adjust neck tension in exact increments without overworking brass necks.
• Dedicated Body Die: Full-length resizes the case body and bumps the shoulder back to maintain easy chambering without making contact with or altering the case neck.
• Straight-Line Bullet Seating: Features an infinitely adjustable micrometer calibrated in 0.001" increments combined with a close-tolerance sliding alignment sleeve and floating seating stem to seat 0.308" bullets with minimal concentricity runout.
• Universal Press Compatibility: Industry-standard 7/8"-14 thread interface fits standard reloading presses across Australian workshops.

Product Specifications

• Product Model: 58155
• Calibre: .308 Winchester
• Bullet Diameter: 0.308"
• Thread Interface: 7/8"-14 standard thread
• Adjustment Increments: 0.001" micrometer markings on seating and neck dies
• Recommended Bushing Range: 0.333" to 0.341" (bushings sold separately)
• Included Components: Competition Bushing Neck Die, Body Die, Competition Bullet Seater Die
• Power Requirements: Manual mechanical operation (no electrical power required)

Who is the Redding Competition Bushing Neck 3-Die Set for .308 Winchester for?

• F-Class and benchrest handloaders — requires the micrometer seating die adjustable in 0.001" increments to seat 0.308" diameter bullets with minimal concentricity runout for dedicated bolt-action match chambers.
• Precision rifle competitors — utilizes interchangeable neck bushings ranging from 0.333" to 0.341" within this competition neck die set to establish precise neck tension and maintain low extreme spread and standard deviation from 300m to 1000m+ targets.

Less suitable for: Semi-automatic, pump-action, or lever-action rifle owners; these action types require a standard full-length or small-base sizing die to ensure reliable feeding, chambering, and extraction instead of a neck sizing die set.