Lee Carbide Factory Crimp Die - .40sw/10mm Auto

The Lee Carbide Factory Crimp Die for .40 S&W and 10mm Auto is purpose-built for reloaders who demand consistent, reliable ammunition that chambers freely every time. Developed for shooters who rely on their handloads for duty, competition, or personal defense, this die eliminates the guesswork from the final stage of the reloading process. Factory crimp dies are essential when working with semi-automatic pistols, where proper chamber fit directly impacts reliability and safety.

Unlike standard seating dies, the Lee Carbide Factory Crimp Die sizes the cartridge while simultaneously applying a precise roll crimp in a single stroke. The carbide sizing ring ensures durability through thousands of rounds without degradation, while the roll crimp—rather than a taper crimp—provides the consistent neck tension required for semi-auto pistols. An adjusting screw allows rapid, repeatable customization of crimp pressure to match your specific load data and brass condition, ensuring every round meets factory specifications for chamber clearance and reliable feeding.

This die benefits high-volume reloaders, law enforcement armorers, and competitive shooters who process .40 S&W or 10mm Auto ammunition. Whether you're running a duty weapon through qualification, loading match rounds for IDPA or USPSA, or maintaining a personal defense firearm, the factory crimp process guarantees that every cartridge will positively chamber without binding or excessive headspace. The compact 1.65 x 1.6 x 4.85-inch footprint fits standard single-stage and progressive presses, making it a reliable addition to any serious reloading bench.