I've been loading 9mm for a while now and everything has been running through my BHP and XD9 just fine. I picked up a G19 a couple weeks ago and have a few rounds jam in the chamber. I pulled them out and measured the OAL (1.071"), crimp, and base diameter (0.393") and compared those to rounds that have been working in the G19, OAL (1.075"), crimp, and base diameter (0.385"). My loading manual says based diameter should not be above 0.391" however, the BD=0.393" rounds fit and function in my BHP. Is it just the difference in the chambers between BHP and G19 or have these cases just had all they can take? I was always under the impression that Glocks had loose chambers and would eat anything, I guess I'll have to rethink that.