The Hornady Custom Grade New Dimension Bullet Seating Die #3 is an all-steel reloading tool engineered to seat .45-calibre projectiles into straight-wall handgun cartridges with precise axial concentricity and consistent overall length (OAL). Built on standard 7/8"-14 threads, this mechanical die weighs approximately 0.58 lb (263 g) and integrates an in-line floating alignment sleeve that captures the case neck and projectile before seating begins, minimising runout across multiple .45-calibre handgun and revolver calibres.

Key Features

• Floating Bullet Alignment Sleeve: Pre-aligns the cartridge case neck, seating stem, and projectile along a shared axis prior to seating to reduce bullet runout.
• Sure-Loc™ Lock Ring: Uses a split-ring clamp design with a cross-bolt to secure the 7/8"-14 threads firmly without scarring the die body.
• O-Ring Tension System: Incorporates a rubber O-ring under the seating adjustment screw to maintain friction and preserve depth settings during continuous press cycles.
• Integrated Crimp Geometry: Allows users to seat and crimp in a single stroke, or adjust the die body upward to perform seating-only operations.
• Multi-Calibre Handgun Coverage: Designed to process straight-wall cases including .45 ACP, .45 Auto Rim, .45 Colt, .45 Winchester Magnum, and .454 Casull.

Specifications

• Brand: Hornady
• Model / MPN: 044151
• Category: Bullet seating die
• Thread Standard: 7/8"-14
• Calibre Compatibility: .45 Caliber (.451" to .452" projectile diameters)
• Cartridge Compatibility: .45 ACP, .45 Auto Rim, .45 Win Mag, .45 Colt, .454 Casull
• Dimensions: Approximately 1.25" × 1.25" (31.8 mm × 31.8 mm) cross-section
• Weight: Approximately 0.58 lb (263 g)
• Operating Mechanism: Manual mechanical press operation (no electrical requirements)

Who is the Hornady Custom Grade 45 Cal Seating Die for?

• IPSC and target handloaders — requires precise overall length control when seating .451" to .452" projectiles into .45 ACP brass using standard 7/8"-14 reloading press stations.
• Cowboy action shooters — relies on the floating internal sleeve of this bullet seating die to maintain concentric alignment when seating .451" to .452" cast or coated bullets into .45 Colt cases.
• Revolver hunters — demands rigid depth consistency in a 0.58 lb steel die to seat heavy-recoil .451" to .452" jacketed bullets securely into high-pressure .454 Casull cartridges.

Less suitable for: Handloaders assembling large-bore rifle ammunition requiring .458-calibre projectiles (such as .45-70 Government), which exceed the internal sleeve dimensions and require dedicated .458-calibre rifle seating dies, or operators running presses with 1"-12 or 1-1/4"-12 threads that require oversized dies or thread-reducing bushings.