SOmething that any progressive owner should do before starting your loading session. Check all the screws & die sets & make sure they are snug. I just dotted off 300rds of 45acp & when I went to box them, noticed the crimp wasn't right. At some point the crimp die had backed out & I had to recrimp 300rds, PITA. Add that to the occasional SP brass, a frustrating 45min of reloading. Another tip for the guys using a progressive w/ the 45acp & those pesky SP cases that sneek by inspection. Keep a few sized/deprimed cases on the bench. When you feel the primer not go in, remove the offending case & replace w/ the already deprimed case. With an auto indexing press, it won't mess you up or get you out of sequence. Did I mention how much I hate SP 45acp brass?