Lee 40 S&W/10mm Auto Carbide Factory Crimp Die sizes the cartridge while being crimped.
Еvery round will positively chamber freely with factory like dependability. This die applies a taper crimp.
The adjusting screw quickly and easily sets the desired amount of crimp.
Takes less time than it would if cases were trimmed and chamfered. A firm crimp is essential for dependable and accurate ammunition, as it eliminates the problems of poor ignition of slow burning magnum powders.