Hope they don't bite my head off... but, if you are looking for 308 accuracy loads, check out Sniper Central forum. Dbl check these, but it seems a 175-180 bullet with 43-44 grns Varget is about tops amongst most. Also 4064. RL15 shows up less, but more than once.

I also talked to an old 308 shooter/reloader this evening on way back from the range. He said his most accurate 308 loads were always mid-level and lower towards starting loads for accuracy. This tracks with Sniper Central feedback and also Waters' Pet Loads.