there is some merit to the bulged case thing. we have seen this before. but....i have not seen problems with the cases, you full length resize them and load them right back up. i also heard a rumor that once cases are fired in a glock, they wont chamber in other 10mm's. i can tell you without question that is not true. we have shot the hell out of our glocks and no problems. yes, some of the cases bulge slightly, but i see no problems from it.