Have used mine to deprime about 7500 .45 acp cases.
I had one small primer case sneak by- on clutch lvl 2 it stopped the machine at the swaging station..... Didn't hurt the machine...: didn't even hurt the brass
I have had one 9mm case that was stuck inside a .45 case. At clutch lvl 2 it did no damage to the machine, it didn't even break the decapping pin. It was pretty nice actually, just jogged the machine up, Yanked the 9mm and hit run.
I have had the tablet turn itself off twice while using the machine. I turned it off and back on and it worked fine.