Yeah, at first they tried to give me the old "look over there; baby Wolf" which didn't go over well with me, after which they got serious, However... never of course admitting the real problem. It was an annealing problem, how much got out of the plant they never said, we never ID the lot run. I've gone back to using their .223 brass again after two years and have found no problems. But... I still don't use it for self-defense loads, not even their factory ammo now, it's great for range play and perhaps hunting and that's it. Thanks for the sitrep on Nolser very interesting. CheersLooks like Nosler forgot that annealing step. Usually their stuff is soft. That is seriously brittle high stress state to split/separate all around the shoulder area.
I guess you could save it by giving it a good anneal run. But I would be leary. Maybe a bad batch of core brass?
PS: it wasn't Nosler brass in my case.