Loading 300 Blk - ep 19 - Crimp Tests with jacketed bullets
This video demonstrates how to set up and use the Lee Factory Crimp Die for 300 Blackout ammunition. The instructor details a method for establishing repeatable crimp settings by marking the die and press, allowing for light, medium, and heavy crimps. Testing reveals that while extreme crimps can distort bullets, a medium to heavy crimp is generally effective for preventing bullet setback without significantly degrading accuracy or brass longevity.













