I've never actually had a problem with them either, in .450 no.2, and .600, going back ages, but I still agree with the muzzleloader thing, if only due to what you get for the insane price. When I looked at and held my first Jamison .450 case, I remember having felt cheated all my life. I've never used Bertram in .500 3", I loaded up on Jamison's for that. Only wish I had done the same for .577, not for NE, but BPE in both that and the .500. I went BPE crazy years ago when age started kicking my arse and I got slower, and those pressures don't stress brass, but if I were Bob, I'd feel the same and they would have heard from me as well. No reason that should have happened if annealed.