Buying a Ruger is like buying a box of chocolates, you just never know wha'cha gonna get........
I had a Ruger M77MKII growing up that shot fairly decent for a few years, then it decided it wasn't going to shoot anymore. I finally gave up on that rifle after doing alot of tweaking on it. I have a buddy with an old Tang safety M77 in 243; that thing will absolutley drive tacks.
If you are going to build a rifle I'd do it on the Ruger action.......Everyone and their dog has a custom on a Remmy action.