The Redding Type S - Elite Bushing Die Set (.300 Remington Ultra Magnum) is a premium three-die reloading system engineered to resize cartridge brass and seat 0.308-inch projectiles with minimal runout. Built with standard 7/8"-14 threads, this mechanical die set includes a Type S Bushing Full Length Resizing Die (#77288), a Type S Bushing Neck Sizing Die (#71288), and a Competition Bullet Seating Die (#55288) featuring a micrometer adjustment stem and a cartridge-alignment sleeve. It provides precise control over neck tension and headspace sizing for .300 RUM cartridge cases without overworking the brass.

Key Features

• Complete 3-Die Set: Delivers full-length resizing, dedicated neck sizing, and micrometer seating capabilities in a single package.
• Type S Bushing Compatibility: Accepts interchangeable sizing bushings in 0.001-inch increments (recommended 0.334" to 0.342" range) to accurately regulate neck tension without requiring an expander ball.
• Competition Micrometer Seater: Features an internal alignment sleeve that supports the case and projectile prior to seating, ensuring straight bullet alignment and exact seating depth adjustments.
• Universal Press Interface: Uses industry-standard 7/8"-14 threading for direct compatibility with standard single-stage and turret reloading presses.
• Mechanical Construction: Built entirely from heat-treated steel, requiring no electrical power or electronic components.

Specifications

• Manufacturer Part Number (MPN): 60288
• Calibre Compatibility: .300 Remington Ultra Magnum (.300 RUM)
• Bullet Diameter: 0.308 in
• Thread Interface: 7/8"-14
• Included Dies: Full Length Bushing Die (#77288), Neck Bushing Die (#71288), Competition Seater (#55288)
• Recommended Bushing Range: 0.334 in to 0.342 in (bushings sold separately)
• Shellholder Compatibility: Redding #6 standard or competition shellholder (sold separately)

Who is the Redding 300 Remington Ultra Magnum (RUM) Type S - Elite Die Set for?

• Long-Range Precision Handloaders — Requires exact neck tension control for .300 Remington Ultra Magnum brass using interchangeable bushings spanning the 0.334" to 0.342" diameter range in this 3-die set.
• Extreme Long Range Target Shooters — Demands the lowest possible bullet runout when seating 0.308 in projectiles via the integrated competition seating die micrometer assembly and floating alignment sleeve.
• Precision Magnum Hunters — Benefits from maintaining critical headspace dimensions and full-length sizing on standard 7/8"-14 presses to ensure reliable chambering and velocity consistency in high-capacity .300 RUM hunting loads.

Less suitable for: Handloaders processing non-RUM cartridges such as .300 Rem SAUM or standard .30-cal belted magnums; these short-action and belted cases require calibre-specific die sets matched to their distinct case dimensions and shoulder geometries.