I was at the range today and as I almost always look around for brass, I came across some .30-06 brass that looked unusual. (sorry no pics. I swear I'll buy a cam one day) The case is stretched real bad above the above the heavy part of the base. There is 1/4" or more indentation or shrunken in that area. I don't know who shot those but he should head to a gunsmith post haste. Bad head space I think or wrong caliber in a rifle. I don't know which.