Well one other option open to you is to sit down with your scale and weight sort them and then test the sorted lots and see if things improve.
That said, I would certainly voice my disappointment with the Nosler staff and perhaps they could make it right in some way.
I bought a bunch of the 155's and have substituted them for the SMK in my .308 with Obermeyer barrel and they shoot very good for me. These are the big 1000 count bulk boxes but not blems. I originally purchased them for my M14 but figured I'd see what they could do in the better shooting gun. I was impressed. I have no qualms subbing the nosler 155, 168, or the .224 cal 52 Match HP's.
The only Nosler product that I never got to shoot was the 6.5mm Accubond that I really wanted to work in my custom FN SPR. A SGK 140 tuned perfectly with little load development when nothing worked with the accubond for me. In fact that Accubond trial was how I ended up finding this site.