The Hornady Custom Grade New Dimension 7mm Short Neck Sizing Die (Model: 46049) is a dedicated reloading die designed to resize only the neck of fire-formed cartridge cases while leaving the shoulder and body dimensions intact. Built for short-action 7mm (.284 calibre) cartridges—including .284 Winchester, 7mm Remington BR, 7x30 Waters, and 7mm Winchester Short Magnum (7mm WSM)—this die preserves the exact fire-formed fit of brass to a specific rifle chamber. By eliminating unnecessary working of the case body, it extends brass life, minimises work-hardening, and helps maintain concentricity for precision shooting applications.

Key Features

• Neck-Only Sizing: Resizes the neck of fire-formed brass without altering the case body or shoulder, maintaining optimal fire-formed chamber alignment.
• Polished Elliptical Expander: Features an elliptical expander ball designed to smoothly expand the case neck, reducing friction and preventing neck stretching.
• Zip Spindle™ System: Utilises a threaded spindle collet that allows incremental micro-adjustments or rapid vertical positioning to eliminate spindle slippage.
• Sure-Loc™ Lock Ring: Includes a split-clamp locking ring that secures the die at the desired depth without scarring or damaging the threads.
• Standard Thread Mounting: Precision-machined to mount directly into standard single-stage and progressive reloading presses.

Specifications

• Product Model: 46049
• Calibre Compatibility: 7mm (.284 calibre) short cartridges (.284 Win, 7mm Rem BR, 7x30 Waters, 7mm WSM)
• Die Type: Neck Sizing Die
• Thread Pitch: Standard 7/8"-14
• Material: Precision-machined steel
• Operation: Manual / Mechanical
• Approximate Weight: 0.2–0.3 kg (0.5–0.7 lbs)

Who is the Hornady Custom Grade 7mm Short Neck Sizing Die for?

• Precision Handloaders — who require a 7mm Short Neck Sizing Die to work exclusively with .284 calibre short-action brass fired through a dedicated bolt-action rifle, preserving custom fire-formed chamber dimensions while mounting directly into standard 7/8"-14 thread presses.
• Competitive Target Shooters — who need to maximise brass longevity and maintain concentricity across .284 calibre short cartridges by sizing only the neck area and avoiding repeated full-length case body work-hardening.

Less suitable for: Shooters loading standard or long-action 7mm cartridges such as the 7mm Remington Magnum or 7mm STW, as well as those loading for semi-automatic, lever-action, or pump-action firearms, which require a full-length sizing die to ensure reliable chambering and extraction.