The Redding 300 WSM Body Die (MPN 75223) is a specialised reloading die engineered to resize the case body and bump back the shoulder of .300 Winchester Short Magnum (.300 WSM) brass without contacting or altering the case neck. Built from heat-treated alloy steel and machined with standard 7/8"-14 threads, it functions on standard single-stage and turret reloading presses. It serves as a companion tool to Type S Neck Bushing Dies or Competition Neck Sizing Dies, allowing handloaders to restore easy chambering on repeatedly fired cases while fully preserving custom neck tension and brass concentricity.

Key Features

• Targeted Body and Shoulder Sizing: Resizes the case body diameter and sets back the shoulder datum line without touching, resizing, or expanding the case neck.
• Component-Free Internal Design: Contains no internal decapping assembly, expander ball, or moving parts, preventing unwanted neck distortion during body sizing.
• Press Compatibility: Built with industry-standard 7/8"-14 press threads to fit common reloading presses.
• Durable Construction: Manufactured from heat-treated alloy steel and includes a standard Redding locking ring for consistent depth settings.
• Optimised for Bushing Systems: Works alongside neck bushing dies to isolate case dimensions from neck sizing operations.

Specifications

• Calibre: .300 Winchester Short Magnum (.300 WSM)
• Press Thread Interface: 7/8"-14 thread
• Shellholder Compatibility: Redding Shellholder #6 (Part #11006) or Competition Shellholder #6 (Part #11606) (sold separately)
• Material: Heat-treated alloy steel
• Packaged Dimensions: Approximately 5.0" H × 2.25" W

Who is the Redding 300 WSM Body Die for?

• Competitive benchrest handloaders — isolates case body sizing and shoulder set-back to restore smooth bolt closure in .300 Winchester Short Magnum (.300 WSM) rifles while maintaining exact, undisturbed neck tension.
• Precision Rifle Series competitors — standardises repeatedly fired .300 Winchester Short Magnum (.300 WSM) brass dimensions across standard 7/8"-14 thread single-stage presses without altering custom neck dimensions established by bushing dies.
• Long-range hunters — bumps the shoulder back on .300 Winchester Short Magnum (.300 WSM) hunting brass for reliable field feeding without working the case neck brass excessively.

Less suitable for: Handloaders who need to deprime, neck-size, and body-size brass in a single step on non-.300 WSM cartridges like .300 Winchester Magnum or .300 PRC; handloaders requiring an all-in-one process are better served by a dedicated full-length sizing die with an integrated decapping and expander assembly.