Looking to scope my new to me but older (1976) M77 25-06 with a nice scope.New to Rugers and wonder if I need #4 and #5 rings or what. Previous owner did some crazy stuff to scope base and D&T'd it for Weaver rings. Maybe in order to get scope high enuff so it wouldn't touch top of barrel. Anyway I would like to put it back normal and need some advice. Thanks :?: