The Redding Type S - Match Bushing Full Die Set (MPN 36428) is a precision two-die handloading system engineered for the .280 Remington Ackley Improved (.280 AI) cartridge. Machined with industry-standard 7/8"-14 threads, the set includes a Type S Full Length Resizing Die and a Competition Seating Die designed to load .284-calibre (7mm) projectiles. The system provides total control over neck tension and bullet seating depth to minimise runout and maximise concentricity for high-accuracy shooting applications.

Key Features

• Interchangeable Bushing Sizing: The Type S Full Length Resizing Die (MPN 77428) resizes the case body, bumps the 40° shoulder, and accepts self-centering Redding neck sizing bushings (sold separately in 0.001" increments) to adjust neck tension without overworking brass.
• Micrometer Bullet Seating: The Competition Seating Die (MPN 55428) features an internal alignment sleeve that fully captures the cartridge case and projectile before seating, guided by a top micrometer graduated in 0.001" increments for precise bullet jump adjustments.
• Configurable Decapping Assembly: Includes a standard decapping rod with an expander ball as well as a decapping-only retainer, allowing handloaders to size necks without expanding if using turned brass.
• Press Compatibility: Utilises standard 7/8"-14 threaded die bodies compatible with standard single-stage and turret reloading presses, pairing with Standard Shellholder #1 (Part #11001) or Competition Shellholder #1 (Part #11601).

Product Specifications

• Cartridge Compatibility: .280 Remington Ackley Improved (.280 AI, 40-degree shoulder)
• Bullet Diameter Compatibility: 0.284 inches (7mm)
• Thread Interface: 7/8"-14 TPI
• Included Sizing Die: Type S Full Length Bushing Die (MPN 77428)
• Included Seating Die: Competition Micrometer Seating Die (MPN 55428)
• Shellholder Requirement: Shellholder #1 / Competition Shellholder #1
• Packaged Weight: Approximately 0.7 kg to 0.8 kg
• Operation: Manual mechanical reloading tool

Who is the Redding 280 Remington Ackley Improved Type S - Match Full Die Set for?

• Precision long-range benchrest shooters — who require a Type S Match Bushing Full Die Set with an internal alignment sleeve and micrometer seating adjustments graduated in 0.001" increments to achieve minimal runout when seating .284-calibre projectiles.
• Precision Rifle Series (PRS) competitors — who rely on this Type S Match Bushing Full Die Set to maintain factory chambering reliability through full-length resizing on standard 7/8"-14 presses, while independently managing neck tension in 0.001" bushing increments across repeated firings.
• Tailored long-range hunters handloading .280 AI — who need a Type S Match Bushing Full Die Set that precisely forms 40° shoulder dimensions on .280 Remington Ackley Improved brass to maximize velocity consistency and downrange accuracy.

Less suitable for: Handloaders attempting to resize standard, non-fireformed .280 Remington parent brass or other 7mm cartridges, handloaders reducing neck diameter by more than 0.008" to 0.010" in a single pass (which requires stepped neck-sizing dies or neck-turning tools to prevent buckling), or reloaders seeking exclusively neck-sizing without full-length body sizing (where a dedicated neck-only bushing die set is the appropriate tool).