Lee Precision 90590 Factory Crimp Die 300 Blackout Reloading

The Lee Precision 90590 Factory Crimp Die delivers consistent bullet seating and case mouth crimping for 300 Blackout cartridges. This specialized reloading die ensures proper bullet retention and feeding reliability across subsonic and supersonic loads.

What Makes This Different

Unlike standard roll crimp dies, the Factory Crimp Die applies a post-sizing taper crimp that duplicates factory ammunition specifications. The collet system grips the case mouth uniformly while maintaining precise bullet alignment. This design prevents case mouth distortion common with traditional crimping methods, resulting in improved concentricity and consistent chamber dimensions.

Key Features

• Taper crimp design matches factory ammunition specifications for reliable feeding
• Collet crimping system maintains case mouth roundness and bullet alignment
• Post-sizing operation ensures consistent overall cartridge dimensions
• Compatible with all standard 7/8-14 thread reloading presses
• Hardened steel construction with precision-machined threads
• Includes detailed instructions for optimal crimp adjustment
• Works with both subsonic and supersonic 300 Blackout loads

The Factory Crimp Die excels in high-volume reloading scenarios where consistency matters. Competition shooters benefit from the uniform bullet pull and improved accuracy potential. The die handles heavy subsonic bullets and lightweight supersonic projectiles equally well, making it suitable for tactical applications requiring reliable cycling. Weather-resistant steel construction maintains dimensional stability across temperature variations.

Technical Specs

• Caliber: 300 AAC Blackout (.300 BLK)
• Thread: 7/8-14 standard reloading press thread
• Material: Heat-treated alloy steel with black oxide finish
• Die Type: Factory Crimp Die with collet system
• Crimp Style: Taper crimp (not roll crimp)
• Compatibility: All major reloading press brands
• Manufacturer: Lee Precision, USA
• Model Number: 90590
• Package: Single die with lock ring

This Factory Crimp Die addresses the specific requirements of 300 Blackout cartridges, from heavy 220-grain subsonics to light 110-grain supersonics. The precision collet design eliminates guesswork in crimp adjustment while maintaining the case integrity essential for reliable semi-automatic function.