[milanuk]

IIRC, BH uses Winchester at least for their .308. Winchester .308 brass tends to be kind of thin and undersized.... if you measure the web area on an unfired case I'm guessing it probably measures somewhere around .463-.465"... unfired Lapua brass measures more in the .468-.469 region. I think the SAAMI spec measurement for your chamber is somewhere around .470", though it could be slightly bigger (measure your fired cases to get an idea). So in closing, no, I don't think there's anything wrong w/ your brass just because it has a little bulge there... it's just an artifact of the kind of brass being used and the plus/minus tolerances involved. FWIW, Winchester brass shoots just fine even w/ the bulge, and lasts a good while... maybe not as long as Lapua, but it costs about 1/2 as much or less.

HTH,

Monte