The Hornady Custom Grade Series III 2-Die Rifle Set for 280 Ackley Improved (Hornady part no. 546321) gives handloaders a full sizing and seating solution for one of the most popular Ackley Improved wildcat cartridges. The set uses Hornady’s patented Zip Spindle design, which locks firmly in place to eliminate slippage during seating adjustments, along with sure-lock rings, a screw seater adjustment, and a built-in crimper. Precision CNC-machined construction holds extremely tight tolerances, so the dies are a true match to a 280 Ackley Improved chamber and give handloaders more control over the entire loading process.

Key Specifications

• Built for the 280 Ackley Improved cartridge, a popular high-performance wildcat chambering.
• Includes a two-die set: a full-length sizing die and a bullet seater die.
• Uses the Zip Spindle design, which positively locks to eliminate slippage during adjustment.
• Features sure-lock rings for secure, repeatable die-height settings.
• Includes a built-in crimper, allowing case-mouth crimping without a separate die.
• Held to CNC-machined tight tolerances for a true match to the chamber.

Frequently Asked Questions

What does this die set include? It includes a full-length sizing die and a bullet seater die for the 280 Ackley Improved cartridge.

What is the Zip Spindle design? It’s Hornady’s locking spindle system that positively locks to prevent slippage during seating adjustments.

Does this set include a crimper? Yes, the seater die has a built-in crimper.

Buy the Hornady Series III 2-Die Set 280 Ackley Improved

Hornady builds Series III dies to give handloaders more control over every step of the loading process. Shop our reloading dies selection and order today for fast, insured shipping from our Lubbock, Texas shop.