The Hornady Custom Grade New Dimension Full Length Sizing Die (MPN: 046331) is a precision-machined steel rifle die engineered specifically for handloaders working with the 7mm Weatherby Magnum cartridge. It resizes fired cartridge cases back to SAAMI factory external dimensions, restores proper headspace, and decaps spent primers in a single press stroke. Built from polished, heat-treated steel, the die utilises industry-standard 7/8"-14 threading to ensure direct mechanical compatibility with single-stage and progressive reloading presses.

Key Features

• Full-Length Resizing & Decapping: Resizes 7mm Weatherby Magnum brass cases to factory external tolerances, restores proper headspace, and extracts spent primers in a single stroke.
• Zip Spindle Design: Employs a positive-locking, lightly threaded spindle mechanism that enables precise incremental depth adjustments as well as rapid vertical movement without slippage.
• Elliptical Expander Ball: Polished elliptical expander significantly reduces internal neck friction, drag, and case neck stretching during the extraction stroke.
• Sure-Loc Lock Ring: Features an all-around clamp design with wrench flats that secures the die body at the chosen setting without marring the 7/8"-14 threads.
• All-Steel Construction: Precision-machined, heat-treated steel internal surfaces deliver uniform case dimensions and smooth cycling when paired with standard case lubricant.

Specifications

• Manufacturer Part Number (MPN): 046331 (also referenced as 46331)
• Calibre Compatibility: 7mm Weatherby Magnum (.284 inch bullet diameter)
• Die Series: Series III Custom Grade Full Length Sizing Die
• Die Thread Interface: Standard 7/8"-14 thread
• Material: Heat-treated, polished steel
• Power Requirements: None (manual mechanical reloading tool)

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

• Hunting Rifle Handloaders — Requires full-length resizing to factory external tolerances to guarantee reliable chambering and extraction for high-pressure magnum ammunition firing .284 inch diameter bullets.
• Mixed-Chamber Brass Processors — Needs a dedicated Series III full-length steel sizing die on a standard 7/8"-14 thread press to restore headspace uniformity across fired brass sourced from multiple firearm chambers.

Less suitable for: Precision competitive shooters seeking custom neck tension via interchangeable sizing bushings, who instead require a match-grade bushing die; and incompatible with non-Weatherby cartridges like the 7mm Remington Magnum due to the proprietary double-radius shoulder dimensions.