I didn't mean to imply it was a Mauser exclusive thing , but that I had seen it more in the 300 Savage/308 case lengths in the Mauser actions . Similar strings in 308 , 7×57 , 257 Roberts , and 06' in Savage 110 , Rem 700 , and Win M70 don't seem to do it to such a degree that I've lost primers . That thing in the Carcano was all on me .