The RCBS 45 Auto 3-Die Carbide Taper Crimp Set (Manufacturer Part Number: 18915) is a high-performance reloading tool designed for processing .45 ACP, .45 GAP, and .45 Auto Rim ammunition. Manufactured in Oroville, California, this set is engineered with an industry-standard 7/8"-14 thread pitch to ensure compatibility with most standard single-stage and progressive reloading presses. Utilizing a highly polished carbide ring insert within the sizing die, this three-die configuration allows reloaders to process straight-walled brass cartridges without the need for case lubrication, streamlining production and preventing powder contamination.

Key Features

• Carbide Sizing Die: Resizes brass cases back to factory-specified dimensions and decaps spent primers. The integrated carbide sizing ring eliminates the need for case lubricant on clean brass.
• Expander Die: Expands the case mouth to the exact internal diameter required for a new projectile and applies a slight outer flare to prevent shaved bullet jackets.
• Bullet Seating and Taper Crimp Die: Seats the bullet to the correct overall depth and applies a precise taper crimp, which is essential for cartridges that headspace on the case mouth.
• Premium Materials: Constructed from polished, proprietary heat-treated die steel with a highly polished carbide insert for wear resistance over hundreds of thousands of cycles.

Product Specifications

• Brand: RCBS
• Part Number: 18915 (also referenced as R18915 or RC18915)
• Compatible Calibres: .45 ACP (45 Auto), .45 GAP, and .45 Auto Rim
• Thread Interface: 7/8"-14 thread pitch
• Packaging Dimensions: 150 mm (Length) x 114 mm (Width) x 43 mm (Height)
• Shipping Weight: 0.658 kg (1.45 lbs)
• Required Accessories: RCBS Shell Holder #3 (sold separately)

Who is the Rcbs 45 Auto 3 Die Carbide Taper Crimp Set for?

• High-volume handgun reloaders — requiring a dry-sizing capability to process high volumes of brass without case lubricant, this RCBS 45 ACP carbide reloading die set integrates a wear-resistant carbide ring and utilizes an industry-standard 7/8"-14 thread pitch to fit seamlessly into standard progressive or single-stage presses.
• Competitive shooters — preparing consistent, match-grade practice ammunition in .45 ACP or .45 GAP, who benefit from a bench-mounted 45 ACP carbide reloading die set shipped in a compact 150 mm x 114 mm x 43 mm storage box and weighing 0.658 kg to maintain precise dimensional tolerances during high-volume reloading.

Less suitable for: reloaders loading heavy-recoiling revolver cartridges that headspace on the rim (such as .45 Colt) which require a roll crimp die to prevent bullet jump, or those using oversized progressive presses with 1-1/4" threads that cannot accept a 7/8"-14 thread pitch without an adapter.