Lee Precision 90839 Factory Crimp Die 7x57mm Mauser

The Lee Precision 90839 Factory Crimp Die is a single-die reloading accessory designed specifically for the 7x57mm Mauser cartridge. Part of Lee's Crimp Die series, this Factory Crimp die uses an internal collet to apply a precise, uniform rifle-type crimp to the case mouth, finishing handloads so they feed and shoot much like factory-loaded ammunition.

Machined from steel and sold individually (In Set: 1), the die threads into any standard reloading press using the common 7/8"-14 thread pattern. It is intended for rifle reloading and is especially useful when loading bullet profiles that benefit from a firm crimp, including traditional cast bullet loads and standard jacketed projectiles. The collet design lets the reloader easily dial in the exact amount of crimp on every round.

Whether you are assembling hunting ammunition for a 7x57 Mauser rifle or producing consistent range-grade handloads, the Lee Precision Factory Crimp Die delivers clean, repeatable crimps case after case, improving bullet pull and feeding reliability. It is the ideal finishing step to add to any 7x57 Mauser reloading setup.