The Redding Type S Full Length Bushing Sizer Die – .300 Norma Magnum (MPN: 77928) provides precise case resizing and neck tension adjustment for .300 Norma Magnum cartridge brass. Built with standard 7/8"-14 mounting threads, this full-length resizing die restores case body dimensions and sets shoulder bump to SAAMI/CIP specifications while utilising interchangeable sizing bushings to size the case neck. Its freely floating bushing design self-centers on the case neck to minimise runout and improve concentricity. Handloaders can configure the decapping assembly with the included steel expander size button or swap to the decapping pin retainer alone to avoid overworking consistent or neck-turned brass.

Key Features

• Full-Length Case Resizing: Returns .300 Norma Magnum case bodies to factory specifications and bumps the shoulder for reliable chambering in high-pressure magnum applications.
• Self-Centering Bushing System: Holds an interchangeable sizing bushing in a floating position, allowing it to self-align on the case neck to optimise concentricity.
• Adjustable Sizing Depth: Decapping rod assembly can be adjusted vertically to size the full length or a partial length of the case neck.
• Configurable Expander Assembly: Ships with both an expander button (#40307) for standard commercial brass and a decapping pin retainer (#10196) for sizing turned brass without an expander ball.
• Standard Press Mounting: Uses industry-standard 7/8"-14 threads to mount into standard reloading presses.

Specifications

• Manufacturer Part Number (MPN): 77928
• Calibre: .300 Norma Magnum (.308" bullet diameter)
• Mounting Thread: Standard 7/8"-14 thread
• Compatible Shellholder: Redding #35 (standard: #11035, competition: #11635; sold separately)
• Compatible Bushing Range: Redding standard bushings from .332" to .340" (sold separately)
• Included Components: Decapping rod assembly (#23730), steel expander button (#40307), decapping pin retainer (#10196), and decapping pin (#01060)
• Power Requirements: None (manual mechanical tool)

Who is the Redding Type S Full Length Bushing Sizer Die .300 Norma Mag for?

• Extreme Long Range competition handloaders — requires precise control over neck tension and shoulder bump when loading .300 Norma Magnum brass, utilizing standard bushings ranging from .332" to .340" inside this 300 Norma Mag reloading die to reduce case runout for maximum distance consistency.
• Long-range precision rifle reloaders — benefits from full-length body sizing on a standard 7/8"-14 thread press to ensure reliable feeding and chamber clearance of high-pressure .300 Norma Magnum cartridges across varying field conditions.

Less suitable for: Handloaders sizing standard .300 Winchester Magnum, .300 PRC, or .338 Norma Magnum brass, which feature distinct case tapers, neck diameters, or shoulder geometries and require cartridge-specific full-length bushing dies.