Lee Factory, Lee 90849 Fact Crimp Die 338 Win Mag DEMO/USED

The Lee Factory Crimp Die for .338 Win Mag is a precision reloading tool designed to lock your bullets firmly in place during the loading process. Unlike standard seating dies that rely on minimal contact, a dedicated crimp die applies consistent, controlled pressure to the case mouth—directly into the bullet's crimp groove. This approach transforms accuracy and consistency in ways many reloaders overlook until they try it.

Crimping matters more than casual shooters realize. When a bullet sits loose in the case, pressure builds unpredictably before the projectile engages and begins moving down the barrel. A firm crimp raises that starting pressure point, creating a more uniform pressure curve throughout the firing sequence. The result: tighter velocity spreads and noticeably better group consistency, especially at distance. Lee's collet design grips the case mouth and squeezes it decisively into the crimp groove, delivering the firm hold that transforms marginal loads into tight ones. Tests show that even bullets without a crimp groove will shoot more accurately once crimped properly—a real-world advantage for handloaders working with various bullet profiles.

This is a demo/used unit, making it an excellent value for reloaders who want factory crimp performance without the new-tool premium. The die threads into any standard 7/8"-14 reloading press. Note that a shellholder is sold separately and matched to your specific cartridge and press type.

Key Features

• Collet-style crimping mechanism applies firm, consistent pressure to case mouth
• Improves pressure curve uniformity and reduces velocity variation shot-to-shot
• Works with .338 Win Mag ammunition
• Compatible with all standard 7/8"-14 threaded reloading presses
• Demo/used condition at reduced cost

Specifications

Frequently Asked Questions

Will this crimp die work in my reloading press?

Yes, if your press accepts standard 7/8"-14 threaded dies. Lee Factory Crimp Dies fit all major press designs—single-stage, turret, and progressive—that use this universal thread pattern. Confirm your press manual if unsure.

What's the difference between this and my regular seating die?

A seating die positions the bullet at the correct depth; a crimp die then applies pressure to the case mouth and locks the bullet in place. This two-step process gives you independent control over seating depth and crimp firmness, resulting in more consistent pressure and velocity.

Do I need a shellholder?

Yes. A shellholder is required to hold the case during crimping and is not included. Shellholders are caliber-specific and must match both your cartridge (.338 Win Mag in this case) and your press design. They are sold separately.

Can I use this die with bullets that don't have a crimp groove?

The die is designed to crimp bullets with a groove. However, tests show that even bullets without a crimp groove will shoot more accurately when a firm crimp is applied to the case mouth, so it may still improve your results.