RCBS 3 Die Set Carbide Roll Crimp 45 Colt

The Carbide Sizer Die sizes the case and decaps the spent primer - The carbide sizer ring eliminates the need to lubricate. The Expander Die expands the case mouth to 'bell' or 'funnel' it so the bullet can be accepted into the case without shaving off lead. The Roll Crimp Seater Die seats the bullet and roll crimps the bullet in place to prevent it from pulling out during recoil to prevent cylinder jams.