Cannot get this to group with any ammo. federal, ppu, - Criterion Barrels AR-15 Hybrid Mid Length Gas System Barrel

I must have gotten a bad one because I cannot get this to group under 2moa with anything. Not my first AR build and not my first barrel that I've tried to tune. Even tried handloads (which I usually only do for my bolt guns) and couldn't get it to group with Varget, BLC-2 or RL 15. Shot 55, 69 and 77gr pills and it sprayed them all. I can only chalk this one up to a defect that was not caught by the company. Ive wasted too much time and ammo on this barrel. Time to move on with a different barrel. Will probably try Krieger and hope for better luck.