I think you might get away with it, or not. Can you be assured there will not be any damage and that the barrels will not split apart at the chokes - I would say no, they might be OK, though, or not. I sincerely doubt any gun smith or other person will guarantee the tubes will be OK- that would set him up for a law suit if the tube failed in any way.

If the barrels are brazed instead of soldered, they probably won't split apart, but top of the top barrel might enlarge a bit and the bottom of the bottom barrel same. This is what happened to a friend's Belgium double with brazed tubes. He only shot steel in one side and said after the first box or so, it quit expanding. It still shot well enough for him to hit with- maybe even better?