What's your price tag range? You can get a suitable 300WM action that's capable of very sub MOA shooting with everything from trued Remington pawn shop guns through $2800 action Dakotas. "BEST" is somewhat subjective. I'd like to aim midrange in there and get a nice custom like a BigHorn, Alpha II, or a Surgeon (again, decent price range in there too) and you'll be very well setup to shoot matches, hunt, etc.