Lee Precision 90953 Factory Crimp Die 50 BMG Reloading Die

The Lee Precision 90953 Factory Crimp Die delivers consistent bullet seating depth and case mouth crimping for 50 BMG cartridges. This specialized reloading die ensures uniform neck tension and proper bullet retention for precision long-range ammunition.

What Makes This Different

Unlike standard seating dies that can vary crimp pressure, the Factory Crimp Die applies uniform crimping force through its collet-style design. The die crimps into the bullet's cannelure or crimp groove after seating, providing superior bullet retention compared to roll crimping methods. This two-stage process eliminates the guesswork common with combination seat-and-crimp operations.

Key Features

• Collet-style crimping system for consistent neck tension across all cartridges
• Hardened steel construction with precision-machined threads for durability
• Standard 1-1/4"-12 TPI threading fits most single-stage and turret presses
• Separate crimping operation prevents bullet deformation during seating
• Factory-set crimp depth eliminates adjustment requirements
• Compatible with both military surplus and commercial 50 BMG brass
• Includes detailed setup instructions and load data recommendations

The Factory Crimp Die excels in applications requiring maximum consistency, particularly for long-range precision shooting where bullet retention under recoil stress is critical. Match shooters report improved accuracy when crimping eliminates bullet movement in the case neck during firing. The die handles both ball and boat-tail projectiles effectively, maintaining concentricity better than traditional roll crimp methods.

Technical Specs

• Caliber: 50 BMG (.50 Browning Machine Gun)
• Thread specification: 1-1/4"-12 TPI standard
• Construction: Heat-treated alloy steel with black oxide finish
• Overall length: Approximately 3.5 inches
• Weight: 8 ounces
• Compatible with: Lee, RCBS, Hornady, Dillon, and Redding presses
• Country of origin: United States
• Manufacturer warranty: Limited lifetime warranty

This Factory Crimp Die addresses the specific challenges of reloading the massive 50 BMG cartridge, where proper bullet retention prevents dangerous setback under the extreme pressures generated. Professional reloaders choose Lee's proven collet design for consistent results across thousands of rounds.