Lee Factory Rifle Crimp Die .338 Win Mag

The Lee Factory Rifle Crimp Die for .338 Winchester Magnum is a precision reloading tool designed to post-size and crimp rifle cartridges in a single operation, ensuring factory-consistent chamber fit and reliable feeding. Built with a carbide sizer, this .338 Win Mag crimp die produces ammunition with the dimensional accuracy and consistency demanded by long-range shooters, hunters, and competitive reloaders who require every round to perform identically downrange.

The crimp adjustment screw allows precise control over crimp depth, enabling operators to work with a wide range of bullet styles—including standard jacketed rounds and even non-cannelured bullets that lack a crimp groove. The carbide sizing element resizes the case body while simultaneously applying the crimp, eliminating the need for a separate operation and reducing setup time at the press. This dual-function approach maintains case neck concentricity and supports the tight tolerances essential for magnum rifle ammunition, where pressure consistency directly affects velocity uniformity and shot-to-shot accuracy.

This tool is essential for handloaders working with the .338 Winchester Magnum—a rifle cartridge favored for extended-range hunting and precision rifle competition. Whether loading match-grade ammunition for benchrest or field rounds for big-game hunting, the Lee Factory Rifle Crimp Die for .338 Win Mag provides the process control and repeatability that separate precision ammunition from standard loads. Compatible with single-stage and turret presses, it integrates seamlessly into established reloading workflows.