.257 Weatherby Magnum Factory Crimp Die – Lee Precision 91225

Description

The .257 Weatherby Magnum is a flat-shooting speed demon, and getting the most out of it on the reloading bench means nailing a consistent crimp. That is exactly where the Lee Precision 91225 Custom Factory Crimp Die earns its keep. This is a collet-style die that squeezes the very end of the case mouth into the bullet, giving you a firm, segmented crimp that holds tight no matter how spicy your load gets. A solid crimp builds higher start pressure before the bullet moves, which smooths out your pressure curve and shrinks velocity variation from shot to shot. The result is more uniform ammo and tighter groups downrange.

What Sets the Lee 257 Weatherby Crimp Die Apart

Unlike a standard roll crimp die, the collet design here is tough to beat for finicky bottleneck cartridges. The collet is powerful enough to form a crimp even on bullets that have no cannelure or crimp groove, so you are not locked into specific projectiles. You also do not have to worry about buckling a case, which can happen with roll crimp setups. Trim length is not critical either, which takes some of the fussiness out of prepping your Weatherby brass.

Fitting the 91225 Into Your Setup

This die uses the standard 7/8-14 thread, so it threads right into any common single-stage or turret press without special adapters. It is sold as a single crimp die, meaning it works as a great add-on to a die set you already own or as an upgrade to a seater that handles crimping in the same step. Worth noting, this one is not carbide, so a touch of case lube on the mouth keeps things running smooth.

For a cartridge built around velocity and reach like the .257 Weatherby, consistent ammo is the name of the game. Adding this crimp die to your process is one of the simplest ways to tighten things up and build rounds that shoot like they came off a factory line.