After trying repeatedly to get the auto safety primer to work and dumping at least 30 primers on the floor while successfully charging only once, I've about given up. Even if some are lucky enough to get a working one, the quality and engineering of this device is equal to a toy you'd get out of a nickel gumball machine. Just snapping the whole thing together, things don't align right or stay together. I had to use a rubber band to keep the plastic feed ramp from splitting open and dumping all the primers on the floor. But the rubber band was too tight, constricting so they couldn't get through and had to loosen it. How rinky dink this setup is... It's making me hate my Lee loader.