Hornady 545139 Match Grade Die Set 280 Ackley Improved Reloading

The Hornady 545139 Match Grade Die Set delivers precision reloading capabilities for the 280 Ackley Improved cartridge, engineered for competitive shooters and precision rifle enthusiasts. This two-die set produces ammunition that consistently meets match-grade standards through advanced manufacturing tolerances and premium materials.

What Makes This Different

Match Grade dies feature tighter manufacturing tolerances than standard reloading dies, with bore dimensions held to ±0.0005 inches for consistent bullet seating and case sizing. The titanium nitride coating reduces friction during the sizing process while extending die life beyond 10,000 reloading cycles. Internal geometry mirrors SAAMI specifications for the 280 Ackley Improved chamber, ensuring proper headspace and optimal case life.

Key Features

• Two-die set includes full-length sizing die and bullet seating die with micrometer adjustment
• Titanium nitride coating provides superior wear resistance and corrosion protection
• Precision-machined from solid steel bar stock with ±0.0005-inch tolerances
• Compatible with all standard 7/8-14 TPI reloading presses
• Includes Sure-Loc lock rings and detailed reloading instructions
• Micrometer seating die allows 0.001-inch bullet depth adjustments
• Elliptical expander reduces case neck stress during sizing operations

Competitive shooters rely on these dies to produce ammunition capable of sub-MOA accuracy at extended ranges. The micrometer seating die enables precise bullet depth adjustments for optimal accuracy nodes, while the sizing die maintains consistent case dimensions shot after shot. Weather-resistant coating ensures reliable operation in humid conditions and extended storage periods.

Technical Specs

• Caliber: 280 Ackley Improved
• Thread pitch: 7/8-14 TPI (standard reloading press compatible)
• Material: Heat-treated tool steel with titanium nitride coating
• Seating die adjustment: Micrometer with 0.001-inch increments
• Lock rings: Sure-Loc style with set screws
• Country of origin: United States
• Manufacturer part number: 545139
• Warranty: Limited lifetime warranty against manufacturing defects

This die set represents the standard for precision reloading equipment among competitive shooters who demand consistent ammunition performance. The combination of advanced materials and precision manufacturing delivers the accuracy potential that the 280 Ackley Improved cartridge was designed to achieve.