I'm not sure about the PPU 308 stuff--if it's anything like their 5.56 it's may be made to NATO specs and may use a different type of primer/powders etc than what is typically found in domestic factory 308. That said, I've bought and fired about a thousand rounds of their 5.56 "battle pack" ammo and have found it to be a great bargain--never had a misfire through my AR, accuracy among the best for budget ammo (better than most factory remie and federal 55 fmj I've fired), and very good quality brass. I'd shoot their 308 without hesitation through any of my 308 rifles--but YRMV.