Area 419 Firearms ZERO M-Series 300 Win Mag Sizing Die with Shellholder

The Area 419 Firearms ZERO M-Series sizing die is purpose-built for resizing bottleneck .300 Winchester Magnum cases on the Area 419 ZERO press, or any other compatible press equipped with a 1-1/4" die turret. The oversized 1-1/4" body is engineered for the ZERO Hybrid or any 1-1/4" Turret setup and is NOT compatible with a 7/8" turret or other 7/8" press.

A micrometer-adjustable headspace and shoulder bump lets the reloader dial in neck tension and shoulder set-back with repeatable precision - essential for magnum-length brass where case consistency directly impacts accuracy. This M-Series die ships with the matching M-Series shellholder, so it drops into the press ready to run.

The ZERO M-Series is the large-format, premium option in the Area 419 ZERO die family, sitting above the 7/8" S-Series line. It is designed for serious rifle reloaders who want the extra rigidity of a 1-1/4" die body and the precision of a micrometer headspace adjustment when prepping 300 Win Mag brass.