my gunsmith shoots 600 and 1000 br and uses tikka t3 actions UNTRUED even though being sponsored by stiller or surgeon i cannot remember. you never see a stock rem 700 action on a competition BR line that hasnt been completely blueprinted
nothing against remingtons being a past owner but factory...
are you talking about custom aftermarket parts? stocks are hardest to find
now tikka performance pretty much takes care of the aftermarket products for tikkas
but trying to find an inletted mcmillan or manners is a whole nother story