After "unloading" the Argentine Mauser brass that had been converted from 30-06 brass 30 years ago, I inspected all of them and discovered that more than half of them had cracks about 1/2" down the case from the mouth down over the shoulder. So all of them went in the trash and I am ordering new, real Argentine Mauser brass with boxer primers and start over again. Next time I do a conversion like this I will anneal the cases before the first time I load them. And I better go back and check all of those other converted cases I am using. Although now days I shoot mostly low pressure lead projectile loads in them and just go to bigger calibers for deer hunting and leave these small caliber lead bullet guns for target shooting. Especially those Swedish Mausers!