You probably got a bad batch.

There are several S&W Pro's that use that ammo and have a wall for of trophy's from years of shooting that ammo.
One even holds Speed records with pistols and revolvers with that ammo. (JM)

I have had no problems with the Brazil or Mexican ammo that is cheaper than most US made ammo.
I also use the Mag-Tech loose bullets for reloading and my 9mm JRN are .355" in dia.

Sorry you have ammo that is not working right.