I don't see why you couldn't, but why??
Stick your 25-06 brass in the classifieds and trade them for 270. Bet you'll have a half dozen people willing to trade in the first 30 minutes. 270 brass is everywhere, much more common than 25-06. I prefer to have my brass correctly headstamped if at all possible. In your case it would be simple, assuming you have enough to make shipping worth it.
Last edited by TATELAW; 02/20/21.