RCBS Lock-Out Die

The RCBS Lock-Out Die is the perfect die to run in a progressive reloading press to determine if a case has been overcharged with powder or undercharged with powder. The die features 7/8″-14 threads to work in any standard progressive press. The Lock-Out Die detects a no powder or double charged case and will lock-up the press movement so you can fix the problem before proceeding. Works for straight wall pistol cases only 9mm Luger and Larger. 2 Cartridge Adaptors (1 Large, 1 Small).