The Redding 280 Ackley Improved Full-Length Sizing Die (Redding part no. 91428) is a precision full-length sizing die built to bring fired 280 Ackley Improved brass back to SAAMI-spec dimensions in a single pass. Redding machines each die from hardened steel to tight tolerances, so cases resize consistently for reliable chambering and long, uniform brass life. It bumps the shoulder back and resizes the case body and neck together, correcting the case-to-chamber fit that fired brass loses on every shot. Handloaders running a bolt gun, AR-pattern rifle, or precision chassis system in 280 Ackley Improved rely on this die to keep ammunition feeding and headspacing correctly, firing after firing.

Key Specifications

• 280 Ackley Improved is the caliber this die is machined to size, matched one-to-one to SAAMI case dimensions.
• Full-length resizing reworks the case body, shoulder, and neck in one pass, correcting brass that no longer chambers easily.
• Standard steel construction (not carbide) means every case needs a light coat of case lube before it goes through the die.
• Standard 7/8-14 die thread means it threads directly into a Redding, RCBS, Lee, or Hornady press.

Frequently Asked Questions

Does this die full-length resize or just neck-size? It’s a true full-length die: it resizes the case body, shoulder, and neck together, not just the neck.

Do I need case lube to use it? Yes. This is a standard steel die, so every case needs a light, even coat of case lube before it goes through the die.

What press does this die fit? It uses the standard 7/8-14 die thread found on nearly all single-stage, turret, and progressive presses.

Buy the Redding 280 Ackley Improved Full-Length Sizing Die

Every Redding 280 Ackley Improved Full-Length Sizing Die ships from our Lubbock, Texas gun shop with the fast, reliable service handloaders expect. Pick it up alongside a matching seater die to round out your 280 Ackley Improved die set, and browse the rest of Redding‘s precision reloading dies lineup for the rest of your press setup.