Lee Factory Pistol Crimp Die .400 Cor-Bon

The Lee Factory Pistol Crimp Die .400 Cor-Bon is a precision reloading component designed for handloaders who demand consistency and reliability in their ammunition. Built for the .400 Cor-Bon cartridge—a powerful, compact round favored by tactical professionals and competitive shooters—this crimp die ensures every round meets exacting specifications. Whether you're a law enforcement armorer managing duty ammunition, a military support operator, or a serious competitive pistol shooter, this die delivers the quality control necessary for mission-critical loads.

Lee Precision's factory crimp die employs a unique dual-stage crimping process that simultaneously sizes the case neck and applies a uniform roll crimp, eliminating the need for a separate sizing operation. This design reduces setup time and tooling requirements while improving consistency round-to-round. The die is precision-machined steel with hardened internal surfaces, capable of handling the higher pressures associated with .400 Cor-Bon loads. The compact footprint (3.3 x 1.4 x 4.6 inches, weighing 0.45 lbs) integrates seamlessly into standard single-stage and progressive press setups, making it ideal for both low-volume custom loads and higher-volume production reloading.

This crimp die is essential for anyone running the .400 Cor-Bon through semi-automatic pistols that require a proper roll crimp to ensure reliable feeding and consistent velocity. The factory crimp approach is particularly valuable for defensive and duty ammunition, where round-to-round uniformity directly impacts point-of-aim shift and terminal performance. Compatible with all standard progressive and single-stage presses using Lee's standard die threads, the LEE90173 pairs perfectly with Lee's complete .400 Cor-Bon reloading kit for optimized efficiency and repeatability.