I will be following this thread with interest. Any posts by me on 308 loads in the reloading section archives have been used in my AR10T carbine, my AR10 rifle, or my Springfield Armory M1A. This is copied from a thread in reloading about 6 years ago.
Posted March 28, 2015
Re15 works quite well with 168 gr and 175 grain. Pet load for accuracy and decent range for me is 42 gr RE15 with Winchester primers and 168 Sierra Match Kings. Winchester M80 brass. That load was given to me by a friend who is military retired Sniper. I messed with it up and down by .2 of a grain, but found 42 gr dead on was most accurate in my AR10 B 20 inch barrel.
100 yard group, and I am not that good of a shot. Old eyes and not enough range time.