Used to do that a lot about 10 years ago when I had an abundant supply of 308 brass laying around. IIRC there were some LC military cases that needed a wee bit of neck turning for the chamber in my T/C Encore. That was just to be on the safe side because they would still fit but the neck O.D. of a loaded round would be just a little more than that of a loaded round in 7mm-08 brass. I thought things may be a little too tight in the neck area; which could lead to some pressure related issues.
