Me personally I go the other way. I neck size with a Lee Collet die every time until it gets stiff (normally about 10 firings) then I anneal and FL size and start over again. Been running on the same 100 brass for the last 6 years since I bought my 12FV 308.

As to bullets and powder, my barrel really likes the 155 Amax and the 150 SST both from Hornady. Put either bullet over 45.0gr of Varget and she will shoot under 1/2" @ 100 yards every time. The 155s do better for groups than the 150 SST, but I use the SST's for hunting deer so 1/2 MOA is plenty good enough for me. I have shot groups out to 400 with A-Max and it holds the 1/2 MOA out there, and I have killed deer out to 450yds with the SST, DRT every time.

Some people prefer heavier bullets with the 308, but I find that the 150-155 works great out to the 400+ yard mark and that's about all the further I can normally shoot in my neck of the woods anyway. If I were going farther then I would probably consider a 175+gr bullet.