The Redding Profile Crimp Die (MPN: 86191) is a dedicated crimping tool engineered specifically for .45 Colt (Long Colt) and .454 Casull cartridges. Operating via a standard 7/8"-14 thread pitch interface, this Series A die applies a proprietary modified roll-crimp that combines the action of a taper crimp with a firm roll. By gently sizing and supporting the case neck while rolling the brass into the bullet cannelure or crimp groove, the die creates uniform, concentric bullet retention and consistent ignition pressure without bulging or buckling the case wall. Designed strictly for a separate crimping step following bullet seating, it fits standard single-stage, turret, and progressive reloading presses.

Key Features

• Dual-Action Profile Crimp: Sizes and supports the cartridge neck while delivering a uniform roll-crimp into the bullet cannelure, eliminating case wall buckling.
• Concentric Pressure Control: Prevents asymmetric or "half-moon" crimping to deliver consistent bullet release and uniform pressure buildup.
• Dedicated Crimping Operation: Functions purely as a separate crimping stage to ensure precise depth control after bullet seating.
• Universal Press Mounting: Uses an industry-standard 7/8"-14 outer thread with an included lock ring to mount into standard reloading presses.
• Heavy Recoil Resistance: Locks nominal .451" to .454" diameter bullets securely against the severe recoil forces of high-velocity revolver loads.

Specifications

• Manufacturer Part Number (MPN): 86191
• Die Series: Series A Handgun Dies
• Calibre Compatibility: .45 Colt (Long Colt) and .454 Casull
• Thread Interface: Standard 7/8"-14 thread pitch
• Compatible Bullet Diameters: Nominal .451" to .454" with cannelure or crimp groove
• Total Boxed Weight: 0.23–0.30 kg
• Power Requirements: None (manual mechanical operation)

Who is the Redding Profile Crimp Die for .45 Colt & .454 Casull for?

• Handgun hunters — secures nominal .451" to .454" bullets against the sharp inertia of high-pressure .454 Casull loads, ensuring this profile crimp die prevents bullet jump from tying up revolver cylinders during heavy recoil.
• Cowboy action competitors — produces concentric, non-bulged roll crimps across .45 Colt brass using a standard 7/8"-14 thread interface, ensuring consistent feeding through tubular magazines and smooth chambering in lever-action rifles and single-action revolvers.
• Silhouette shooters — provides uniform neck tension and crimp concentricity across .45 Colt and .454 Casull cases weighing 0.23–0.30 kg in total packaging, delivering the consistent ballistic pressure curves needed for long-range steel knockdown consistency.

Less suitable for: Handloaders reloading rimless auto-pistol cartridges like .45 ACP that headspace on the case mouth (which require a dedicated taper crimp die), shooters using non-cannelured jacketed bullets, or handloaders running extreme maximum-pressure .454 Casull loads with heavy bullets above 335 grains (who are better served by a heavy collet crimp die or specialised heavy taper-crimp tool).