I have been gunsmithing for forty years and started because of my interest in benchrest shooting and rifle accuracy in general. When I started shooting BR, there were still a few unlimited class rifle in use which were based on FN single shots. Every now and then, one of these rifle would shoot a pretty good group. None of them were legitimate 1/4 minute rifles. I have never been shy about trying different, unconventioal, actions for an accuracy built and, on occasion, one shot pretty well, but the only standard, commercial action which was regularly capable of being built into a competitive BR rifle was the Remington 722 or it's derivitives (700, 600, xp100).
I have always said, if you want an accurate varmint rifle, use a Remington. If you want a stone-reliable hunting rifle, use a Mauser, if you want a classy, hunting.target rifle, use a Model 70. GD