I've only used one box of their ammo, .22 Hornet, 15 years ago, but bought 250 new .243 cases last year from 2 lots and had no trouble. In fact, it's excellent brass. Since all brass was pretty scarce at the time, I was happy to get it.
Just for grins, have you checked the unfired rounds to see if they fit in the shellholder? If they do, that would be alarming to me.
