The Hornady Custom-Grade Series III Full Length Sizing Die (MPN: 046331) is a single, precision-machined handloading die engineered to resize fired brass cases and decap spent primers for the 7mm Weatherby Magnum cartridge. Machined from heat-treated steel and polished to a mirror finish, it restores case body dimensions, neck tension, and shoulder datums to SAAMI factory tolerances to ensure reliable feeding and chambering across standard bolt-action hunting rifles. It mounts via standard 7/8"-14 TPI threads and requires a Hornady #5 shell holder for press operation.

Key Features

• Full-Length Resizing: Returns the entire body, shoulder, and neck of fired 7mm Weatherby Magnum brass back to SAAMI factory specifications, facilitating smooth feeding and extraction.
• Zip Spindle™ System: Utilises light incremental threads on the decapping spindle to prevent slippage while enabling precise adjustments when setting decapping pin depth.
• Elliptical Expander: Polished internal expander ball minimises friction and case stretch as it exits the neck, maintaining neck concentricity and preventing shoulder distortion.
• Sure-Loc™ Lock Ring: Split-ring clamp design tightens around the 7/8"-14 die body without marring the threads, maintaining consistent sizing depth across production runs.

Specifications

• Cartridge Compatibility: 7mm Weatherby Magnum (.284 in / 7.21 mm bullet diameter)
• Die Type: Full-length sizing and decapping die
• Thread Interface: 7/8"-14 TPI (compatible with standard single-stage and progressive presses)
• Shell Holder Requirement: Hornady Shell Holder #5 (or Shell Plate #5)
• Material: Heat-treated, polished steel
• Product Weight: Approximately 0.25–0.35 kg (packaged weight)
• Power Requirements: None (manual mechanical reloading tool)

Who is the Hornady 7mm Wby Weatherby Magnum Full Length Die for?

• Handloaders loading for 7mm Weatherby Magnum hunting rifles — relies on standard 7/8"-14 TPI press threads to reform belted .284 in (7.21 mm) diameter brass back to SAAMI tolerances, ensuring dependable bolt closure and cycling in field environments.
• Reloaders processing mixed-chamber or once-fired brass — matches the exact headspace and dimensions of the 7mm Weatherby Magnum belted cartridge using a Hornady #5 shell holder to return expanded cases fired in various rifle chambers back to factory exterior dimensions.

Less suitable for: Handloaders processing alternative 7mm-class cases such as 7mm Remington Magnum, 7mm PRC, or 28 Nosler, which feature distinct shoulder angles and body geometries; these cartridges require a dedicated, cartridge-specific full-length sizing die. Reloaders sizing unlubricated brass must not use this steel die, as dry cases require a carbide die design or immediate exterior case lubrication to prevent structural case seizure.