Redding Micro-Adjust 40 S&W, 10mm Auto Micrometer Taper Crimp Die

Redding Micro-Adjustable Taper Crimp Dies provide faster, more precise adjustments than typical taper crimp dies. The micrometer features white hash marks for easy identification of adjustments. Taper crimp dies were designed for handgun cartridges which headspace on the case mouth in which conventional roll crimping is undesirable.Notes:A taper crimp gently tapers tighter and tighter to hold the bullet in place.This doesn't work the case mouth as hard as the roll crimp and it doesn't affect the overall length of the cartridge.