Some guns don't like certain ammo; just how it is.
I'd just stay away rom PMC instead of trying to find an issue that isn't there.
^ This.
A unique gun (see that unique serial number on the side of yours? that's what I mean, by
unique) may well not "like" any one specific make/model of ammo. It's the real-world manifestation of tolerance-stacking.
If your unique gun simply doesn't play well with one or two or a few different ammo - particularly range-fodder grade ammo - I would not worry, and I would instead simply make a note to just not use that ammo, for that gun.
This is why I always recommend to newer shooters -particularly if they only have one gun in that caliber- that they do not immediately jump to buying ammo in-bulk, regardless of the potential savings to be had. It may be a few dollars or even tens of dollars more expensive to purchase a few different makes/models of ammo of that gun's caliber and to test it for function and performance (just because your gun will function with that ammo doesn't mean that its downrange performance [read: accuracy/precision] will also be good), rather than to risk having saved a few dollars by buying bulk of the (un)lucky ammo that person's unique gun either will not shoot (failure to function, as with what you are seeing) or not shoot well.
This kind of unique-gun/unique-ammo issues are actually VERY common in the gun-world, which leads up to my second point....
Always, always, always take the time to vet your ammo - particularly defensive ammo.
Having the gun not work well at the range is just annoying. Having it do the same at a class or competition may cost you quite a bit more frustration/embarrassment, and maybe even money, too (range/entrance fees or class tuition). And the consequences would be unimaginable, if this occurred with one's chosen defensive/duty cartridge, in a lethal-force encounter.
