Took my new G26 to range today. It has 150 perfect rds through prior to today. Start with PMC 115 gr FMJ. 50 rds. Perfect Next up, 2 mags of Gold Dot 124 gr JHP +P. Perfect. So, I turn to my son and say " now for Underwood 115 +P+ JHP, I hope the gun doesn't blow up" Third round jams, I mean totally jammed. Slide closed, could not rack the slide. Jammed completely. Try everything. At this point I think Theres a live round in chamber. Nervously, I disassemble, remove the RSA but cannot remove barrel. Wow. Finally after much effort, I am able to force the barrel out. Round is actually a fired round. Brass appears slightly bulged above the rim. Weak chamber support or bad ammo?