The Redding 92223 Seating Die is an all-steel, mechanical reloading tool engineered specifically for assembling .300 Winchester Short Magnum (.300 WSM) ammunition. Operating via a standard threaded seating plug, the die controls cartridge overall length (COAL) to ensure dependable projectile seating for bolt-action rifles. It incorporates an integrated internal roll crimp ring, allowing handloaders to seat and crimp bullets with cannelures in a single operation or adjust the die upward to seat without crimping.

Key Features

• Dedicated Calibre Geometry: Machined specifically to support the body taper and shoulder profile of the .300 Winchester Short Magnum case.
• Integrated Roll Crimp: Features an internal crimp ring to apply bullet retention crimps into projectile cannelures when required.
• Universal Press Mounting: Features standard 7/8"-14 threading to fit industry-standard single-stage and progressive reloading presses.
• Included Lock Ring: Ships with a standard 7/8"-14 Redding alloy lock ring (Part #01016) to lock in seating depth settings.
• Modular Stem Support: Fitted with standard seat plug #01080, with support for optional micrometer seating head upgrades.

Specifications

• Cartridge Compatibility: .300 Winchester Short Magnum (.300 WSM)
• Bullet Diameter: .308 in / 7.62 mm
• Die Thread Interface: 7/8"-14 TPI
• Shellholder Required: Standard #6 Shellholder (sold separately)
• Seating Stem Type: Threaded standard plug (#01080)
• Operation: 100% mechanical (non-powered)
• Approximate Weight: 200–300 g

Who is the Redding 92223 Seating Die for?

• Handloaders assembling .300 WSM ammunition — Requires a dedicated seating die to properly seat .308 in (7.62 mm) diameter projectiles to precise overall lengths while supporting the specific case geometry of the .300 Winchester Short Magnum.
• Reloaders utilizing standard press equipment — Relies on standard 7/8"-14 thread pitch sizing to integrate directly into single-stage or progressive reloading presses using a standard #6 shellholder.

Less suitable for: Handloaders seeking to load standard .300 Winchester Magnum or other short magnum cartridges like 7mm WSM, or competitive shooters requiring 0.001" micrometer-indexed adjustments and full-length sliding sleeve bullet alignment without crimping; these applications require calibre-specific dies or dedicated sliding-sleeve competition seating dies.