As far as I know, the Model 70 rifles are all still produced here in the U.S.
I haven't found the Model 70 to be any more or less accurate than the Savage, Remington, or Ruger rifles. I mean on average. I've owned quite a few rifles from each of those four manufacturers and I've found accurate ones and not so accurated ones from each company.
I've found a few foreign brands that seem more accurate on average than any of the brands you mentioned.