Ruger M77--The little American Mauser
Recently bo't a used M77 MkIITarget in .243Win. Have shot it a little, group is 1 1/4" @ 100yd with my starting load of IMR 4350 and a 100 gr. Nosler Ballistic Tip; assume I'll be able to halve that or better with continuing load development.
Gun is well made, solid, feels nice to me.
Bottom line is, I'm happy with it. If it fits you nicely you have a nice rifle. I'd expect it to be quite accurate in .308Win, and be highly disappointed if that were not the case. (Like writing Ruger's customer support people and asking what gives.) But you do have to do the load development to get the max accuracy out of this or any rifle.
Enjoy the development. As always, the quest is part of the destination.