Lee Factory Crimp Die, .404 Jeffery

The Lee Factory Crimp Die for .404 Jeffery (brand part no. 91985, 1 1/4-12 thread, custom over-run) crimps the bullet in place more firmly than a standard seating-die crimp. Lee Precision designed the Factory Crimp Die so that even bullets with no crimp groove shoot more accurately, because a firm, uniform crimp forces pressure to build to a higher level before the bullet starts to move. That higher starting pressure produces a more consistent pressure curve and less shot-to-shot velocity variation, both of which matter for a big-bore dangerous-game cartridge like .404 Jeffery. It threads into any standard reloading press.

Key Specifications

• .404 Jeffery caliber, 1 1/4-12 thread, custom over-run die.
• Factory Crimp Die design applies a firmer crimp than a standard seating die.
• Works on bullets with no crimp groove and still improves accuracy.
• Produces a more uniform pressure curve by raising the bullet’s starting resistance.
• Reduces shot-to-shot velocity variation as a result of the more consistent pressure curve.
• Ships at approximately 0.555 lb per box.

Frequently Asked Questions

What does a Factory Crimp Die do differently from a seating die’s crimp? It applies a firmer, more uniform crimp that raises the pressure needed to start the bullet moving, which produces a more consistent pressure curve and less velocity variation.

Does this die work on bullets without a crimp groove? Yes, Lee’s testing shows even bullets with no crimp groove shoot more accurately with the Factory Crimp Die.

Buy the Lee Factory Crimp Die, .404 Jeffery

Order the Lee Factory Crimp Die for .404 Jeffery from our reloading dies selection to tighten up pressure consistency on this big-bore cartridge. Order through our Lubbock, Texas gun shop and we will get it moving as soon as it’s ready to ship.