The Redding Type S Full Length Bushing Sizing Die (MPN: 77666) is engineered to resize the entire cartridge body, bump the shoulder to specification, and precisely regulate neck tension on 20 BR (20 Benchrest / 20 BR Remington) brass. Machined from heat-treated, case-hardened alloy steel, this die utilizes interchangeable sizing bushings that freely self-center on the case neck to preserve concentricity and minimize bullet runout. Operating purely as a mechanical reloading tool, it threads into standard reloading presses using an industry-standard 7/8"-14 thread pattern and utilizes standard Redding #1 or compatible universal shell holders designed for standard .308-family rim dimensions.

Key Features

• Full-Length Sizing with Bushing Control: Resizes the cartridge case body and bumps the shoulder back to specification in a single press stroke while using separate bushings to set exact neck tension.
• Self-Centering Bushing Design: Accepts interchangeable steel or titanium nitride (TiN) bushings (available separately) adjustable in 0.001" increments that self-align during neck entry.
• Adjustable Decapping System: Features an adjustable decapping rod that permits partial neck sizing along the case neck length when full neck sizing is not required.
• Body Die Dual Functionality: Removing the internal decapping assembly and neck bushing allows the tool to serve as an unassisted body sizing and shoulder bumping die.
• Calibre-Specific Engineering: Built specifically for 20-calibre dimensions using 0.204" diameter projectiles without standard expander button decapping pin retainers.

Specifications

• Product Category: Type S Full Length Sizing Die
• Calibre Compatibility: 20 BR / 20 BR Remington
• Thread Interface: 7/8"-14 standard reloading press threading
• Bushing Increment Sizing: 0.001" intervals
• Shell Holder Requirement: Redding #1 or universal equivalent
• Material: Heat-treated / case-hardened alloy steel
• Packaged Weight: Approximately 200–350 g

Who is the Redding 20 BR Type S Full Length Die for?

• 20 BR benchrest competitors — needs exact neck tension adjustments in 0.001" intervals while maintaining full-length case and shoulder dimensions on custom-chambered 20 BR match rifles to maximize concentricity.
• Precision varmint shooters handloading small-calibre ammunition — requires full-length body sizing via standard 7/8"-14 press threading to guarantee smooth feeding and chambering of high-pressure 20 BR rounds across high-volume field shooting sessions.

Less suitable for: Fire-formed brass fired exclusively in tight-chamber single-shot rifles that do not require body dimensional cycling relief, where a bushing neck-only sizing die is preferred, or high-volume processing of mixed-lot brass with variable neck wall thicknesses, where a standard non-bushing full-length die with an expander ball is more forgiving.