The word "inherent", is the clue to this post..therefore the winner is the one piece stock bolt action.
But the most critical factor, by far, in rifle accuracy is the barrel. Next would be the wood to metal fit, and of course the chamber would also be a factor. You can build a super accurate single shot, no doubt about that.
I have, over the years, had more trouble making a single shot shoot little tiny groups than I have had with bolt guns, but I have built and owned a lot of really accurate single shots.
I have owned Ruger no. 1's that shot super and some than wouldn't shoot for beans..A new Lothar Walthar barrel always solved the problem of accuracy with the Rugers, at least so far..I also use a aluminum V that is part of the echon to the forend that Jack Belk modifys.
I also believe a heavy bull barrel works best if one wants a super accurate SS. I suspect the heavy barrel is less subjective to inletting problems and operates mostly on its own.
