Say hello to the factory crimp die, which boasts a collet design that imparts a rifle-style crimp onto your cartridge cases. This innovation makes reloading a pleasure, even with the most challenging-to-crimp cartridges. The collet's impressive action eliminates the need for bullets to have a crimp groove, it can create one on its own. This firm crimp not only enhances accuracy by requiring higher pressure before bullet movement but also ensures a more consistent pressure curve and reduced velocity fluctuation. Please take note that this die is not coated with carbide.