The Redding 71139 Type S Bushing Neck Sizing Die is a precision reloading tool designed specifically for the 7mm-08 Remington cartridge (0.284" bullet diameter). Built to thread into standard 7/8"-14 reloading presses, this die resizes only the case neck while leaving the cartridge body and shoulder fire-formed to a specific rifle's chamber. By utilizing freely floating, interchangeable sizing bushings (typically available in 0.001" increments ranging from 0.305" to 0.313"), it eliminates excessive brass working and ensures accurate neck tension control to extend case life and reduce bullet runout.

Key Features

• Interchangeable Bushing System: Allows handloaders to precisely set neck tension using interchangeable bushings in 0.001" increments without overworking the brass.
• Self-Centering Design: The free-floating bushing self-centers on the case neck to optimize concentricity and minimize bullet runout.
• Dual Decapping Assembly: Includes both an expander ball assembly for standard commercial brass and a decapping pin retainer for reloaders sizing neck-turned brass without an expander ball.
• Partial Neck Sizing Capability: The decapping rod assembly is fully adjustable, allowing users to size the entire neck length or only a designated portion.
• Standard Press Compatibility: Features standard 7/8"-14 mounting threads to fit standard single-stage and turret reloading presses.

Specifications

• Brand: Redding Reloading Equipment
• Model / MPN: 71139
• Cartridge Compatibility: 7mm-08 Remington (0.284" bullet diameter)
• Die Type: Type S Bushing Neck Sizing Die
• Thread Size: Standard 7/8"-14 threads
• Compatible Shellholder: Standard #1 Shellholder or Competition Shellholder (sold separately)
• Compatible Bushing Sizes: Redding interchangeable bushings, typically 0.305" to 0.313" (sold separately)
• Unit Weight: Approximately 220 g to 300 g

Who is the Redding Type S Neck Sizing Die for 7mm-08 Remington for?

• Bolt-action precision target shooters loading 7mm-08 Remington — requires fine-tuned neck tension using 0.001" increment interchangeable bushings to maintain concentricity and maximize accuracy with this Type S neck sizing die on standard 7/8"-14 presses.
• Hunters handloading ammunition for a specific 7mm-08 Remington rifle chamber — benefits from resizing only the neck of fire-formed brass on standard 7/8"-14 threaded presses to maximize brass life and chamber fit in a dedicated 7mm-08 Remington bolt-action rifle.

Less suitable for: Reloaders processing brass fired across multiple different rifle chambers or for use in semi-automatic and lever-action firearms; in these applications, neck sizing alone is not suitable and a full-length sizing die or dedicated body die is required to restore SAAMI body dimensions and bump the shoulder.