I've shot several cases of this stuff and it was my preferred ammo for classes that required factory rounds. I've had problems with the last case I bought - 5x150-round boxes headstamped WMA 20. Specifically, I had two rounds that required more than one strike to fire, both in my PX4 D. OTOH, I used it in two classes with other guns (PX4 G and Walther P99C) with no issues. Those two rounds that didn't go off the first time (one took one extra strike, the other two) are the only two rounds I've had issues with since I bought the gun. The gun itself was a police trade-in built in '11, so it's possible there's just a lot of accumulated funk in the FP channel or something. It has run fine with my handloads and S&B ammo.
The gun has been to LTT for a trigger job so that may be a contributing factor, though I asked for a heavier trigger spring.
Has anyone else had problems with this stuff recently?