I just got back from the range with my xdm 9mm and cz 75b. No problems shooting Blazers and Federals through the xdm, then switched to Winchester white box and got a whole bunch of duds. I tried them in the CZ, which has never had an issue with any rounds, and had the same result. The low powered pop and failure to eject. I bought 4 boxes at Dick's and that is 2 so far that have given me problems. The range attendants said that they never recommend Winchester rounds because they are garbage. I have shot many white boxes prior with no issues. Did I get a crap batch or is the quality going down? Similar experiences or thoughts?