I guess I do not understand. Do you all know what it would take to ream a .308 to a 30/06 with a pull through finish reamer? I think I’d be reaming for 20 to 40 minutes. Doesn’t sound like a mistake. .308 is roughly .010 wider in diameter then 30/06 so, as Eli said, you’ll get a ringed case. New barrel time because nobody knows squat about the specs of the chamber that was done.