I don't get the hate for " I don't care about you". He's not wrong from my limited experience on "blueprinting" factory actions. If it gets refaced and squared as well as truing the factory tenon threads, barrels previously cut for that action are going to need some work if they are usable at all. If the OP has no barrels on hand is starting fresh, then no big deal. Personally, I wouldn't spend money on "truing" up factory actions when tikka exists as a cheap factory option.