The Redding 7mm Rem Mag Full Length Sizing Die restores fired 7mm Remington Magnum bottleneck brass cases back to factory SAAMI dimensions. Machined from high-grade alloy steel, heat-treated, and hand-polished, this die resizes the case body, bumps the shoulder back to standard headspace, sizes and expands the neck, and decaps spent boxer primers in a single downstroke. It features an industry-standard 7/8"-14 TPI thread interface, making it compatible with standard single-stage, turret, and progressive reloading presses.

Key Features

  • Full Dimension Resizing: Sizes the case body, sets back the shoulder, and expands the neck to factory SAAMI dimensions to ensure smooth feeding and chambering across various rifles.
  • Integrated Decapping Assembly: Built with a decapping rod assembly, steel expander size button, and decapping pin to remove spent primers simultaneously during the sizing stroke.
  • Precision Heat-Treated Alloy Steel: Precision-ground and hand-polished interior surfaces reduce brass friction and minimise case stretching during full-length resizing.
  • Standard Press Mounting: Uses standard 7/8"-14 threads per inch (TPI) to integrate seamlessly into standard reloading press setups.

Specifications

  • Calibre: 7mm Remington Magnum
  • Bullet Diameter: .284 in (7.21 mm)
  • Thread Interface: 7/8"-14 TPI
  • Required Shellholder: Shellholder #6 (sold separately)
  • Operating Mechanism: Mechanical manual press operation (non-powered)
  • Included Components: Full-length sizing die body, decapping rod assembly, steel expander size button, and decapping pin

Who is the Redding 7mm Rem Mag Full Length Sizing Die for?

  • Hunters and Field Shooters — requires guaranteed chambering and extraction for .284 in (7.21 mm) 7mm Remington Magnum hunting rifles by sizing the entire case body and shoulder back to SAAMI specifications using standard 7/8"-14 TPI reloading presses.
  • Reloaders Processing Mixed-Rifle Brass — ensures cartridges fired across multiple chambers are restored to uniform dimensions with this 7mm Rem Mag full length sizing die, functioning with standard Shellholder #6 tooling.

Less suitable for: Target shooters seeking ultra-precise control over neck tension in single, dedicated bolt-action rifles, who require a bushing-style full length die or dedicated neck sizing die.

SKU RD41963LP
Model # 91136R
Brand Redding
Shipping Weight 1.0000kg

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