Today I bought 100 "once fired" .308 Winchester casings at a local Gun Show. The casings were very clean and good looking. Upon running a few of these casings through the full sizing die process, guess what...the bolt on my .308 wouldn't even come close to closing. I adjusted my Redding Die several times to no avail. So I whipped out my Lee Press and Lee dies and tried again. Same results. When I compared these casing to other I'd had previously fired in my rifle, I noted that the angle on the shoulders just below the neck were different. I then measured both casings and they were exactly the same length. So gents, can I correct or change the angle on the newly purchased casings so my rifle will like these casings, or did I just waste my money on somebody else "once fired" brass?