Lee Precision .300 Blackout Steel Factory Crimp Die - 90590

Overview

The Lee Precision Steel Factory Crimp Die for .300 Blackout is engineered to secure bullets firmly in place with uniform pressure. Built from steel, it utilizes a powerful collet that squeezes the case mouth onto the bullet, creating a secure hold even on projectiles that lack a traditional crimp groove. The collet design prevents the case from buckling—a common issue with standard roll crimp dies—while ensuring that trim length is not critical. Testing demonstrates that applying a firm crimp with this die results in a more uniform pressure curve and improved accuracy.

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