The Lee Precision 90931 Collet Crimp Die delivers consistent bullet retention and case mouth uniformity for 500 S&W Magnum cartridges. This specialized crimping die eliminates over-crimping while maintaining proper bullet seating depth for maximum accuracy and reliable feeding.
What Makes This Different
Unlike standard roll crimp dies that can deform case mouths, this collet crimp die uses a split collet system that applies uniform radial pressure around the entire case mouth. The design prevents case buckling and maintains consistent neck tension across all rounds. This approach extends case life by 40-60% compared to traditional roll crimping methods while delivering more consistent velocities.Key Features
- Split collet design applies uniform 360-degree crimping pressure
- Hardened steel construction with precision-machined threads
- Standard 7/8-14 threading fits all major reloading presses
- Adjustable crimp depth via lock ring system
- Compatible with jacketed, cast, and plated bullets
- Reduces case mouth work-hardening and splitting
- Maintains consistent overall cartridge length
Technical Specs
- Caliber: 500 Smith & Wesson Magnum
- Thread pitch: 7/8-14 TPI standard
- Material: Heat-treated alloy steel
- Finish: Black oxide coating
- Includes lock ring and adjustment instructions
- Compatible with single-stage and progressive presses
- Made in USA with lifetime warranty
- Weight: 4.2 ounces
