Redding Taper Crimp Die .45 Colt/.454 Cassul

The Redding Taper Crimp Die for .45 Colt/.454 Cassul is purpose-built for reloaders who demand a clean, uniform crimp on magnum handgun cartridges. Unlike profile crimp dies, this taper crimp die is engineered for cartridges that headspace on the case mouth—a critical distinction for .45 Colt and .454 Cassul shooters. If you're working with magnum handgun loads and tired of fighting loose, inconsistent crimps, this is the die that solves the problem.

Redding designed this crimp die to eliminate the "half moon" crimp defect that plagues magnum handgun reloading. A properly applied crimp does more than just look better; it tightens groups and improves overall load consistency. The key is sequencing: your bullet must be seated to correct depth in a separate operation before you crimp. That two-step process—seat first, crimp second—is what separates a tight, uniform crimp from the sloppy results you get trying to do both at once.

This die fits naturally into a progressive press setup (Redding includes taper crimp dies in their magnum handgun progressive sets for exactly this reason) or works standalone in a single-stage press for meticulous hand-loaders. Whether you're loading .45 Colt for cowboy action, hunting, or sport shooting, or pushing .454 Cassul loads for hunting or silhouette competition, proper crimp tension matters. Redding's solution is built for shooters who understand that reloading precision starts with the fundamentals.

Key Features

• Taper crimp design for .45 Colt and .454 Cassul cartridges that headspace on the case mouth
• Produces uniform, tight crimps to improve load consistency and group tightness
• Eliminates the "half moon" crimp common with magnum handgun cartridges
• Works with single-stage presses or as part of a progressive die set
• Requires bullet to be seated to correct depth in a prior operation

Frequently Asked Questions

Will this taper crimp die work with my .45 Colt or .454 Cassul progressive press?

Yes. Taper crimp dies are standard components in Redding's magnum handgun progressive die sets because the best crimp is achieved after the bullet is already seated. Your press setup should accommodate it as the final crimp station.

Do I need to seat my bullet before using this crimp die?

Yes. The correct sequence is to seat the bullet to proper depth in a separate operation first, then apply the crimp with this die in a follow-up step. This two-stage process ensures a uniform, tight crimp.

Why is a taper crimp die better than a profile crimp die for .45 Colt and .454 Cassul?

Taper crimp dies are designed for cartridges that headspace on the case mouth. They provide a uniform roll-type crimp that eliminates the inconsistent "half moon" crimp that often appears on magnum handgun loads, resulting in tighter groups and better load reliability.