2 boxes of WWB, 1 box of WWB HP, and the Rangers that I had left over... It fired all of them flawlessly with zero hiccups. I still need to shoot more HPs to make sure, but it seems the new barrel did the trick. I also shot one of my new zombie targets, but didn't get the chance to shoot the other 2 because everyone at the range started complaining about it being "crazy" and "distracting". Whatever. I'm so sick of this world we live in today. Bunch of fucking pussies that are only concerned about everyone else's business and not their own. If you can't keep your eyes on your own target, that's your problem, not mine. But I complied, mainly because I didn't have much time, and didn't want or need their distraction of complaining about my distraction.