I recently loaded some new Norma brass in 7x57. A couple shots revealed very flat primers and the Mauser extractor slot dimple on the case head. Measuring case necks indicated a thickness of .020". I could have seated a bullet without resizing. They sent another box of brass- same problem. I bought some Nosler brass and plan to stick with that. I've always had good results with Norma, but now I'm not so sure. Anyone have this headache in another caliber?

Bill Ferguson