Built for reloaders working in 300 AAC Blackout, the Redding 300 AAC Blackout Full-Length Sizing Die (Redding part no. 91327) full-length resizes fired brass down to factory-spec dimensions so it chambers smoothly again. Redding’s steel die construction holds precise dimensional tolerances load after load, which matters for anyone chasing consistent, repeatable ammunition. Unlike a neck-only die, it works the entire case body and shoulder, making it the right choice for brass fired in a different chamber, a semi-auto action, or cases that have simply stretched with use. It’s a straightforward, dependable upgrade for any 300 AAC Blackout reloading bench.

Key Specifications

• 300 AAC Blackout 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 300 AAC Blackout Full-Length Sizing Die

Every Redding 300 AAC Blackout 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 300 AAC Blackout die set, and browse the rest of Redding‘s precision reloading dies lineup for the rest of your press setup.