Quick update: Recieved the gun yesterday. While not an expensive gun, it looks even better than the pictures in the ad showed.
I measured everything and the bores were both within 2/1000(+) of the stampings on the flats. I presume they are within the gap between two measureing plugs. Weight of the barrels are within an ounce of the stamp. Total weight was 6# 1/2oz. Surprisingly, the chokes measure out at .036" and .040"; nowhere near the proof stamp and hard to add metal. Don't really know how this could be. No signs of any polishing on the barrels or under the CC. Engraving is super sharp. Condition of the gun for 90 some years is unbelievable.
The loose vs off face questions were answered. The gun has a very slight loose feel when closed (not open) so not side to side wriggle. The movement is so slight you can feel it but not see it. Held up to a strong light, I could see no gaps as I twisted and moved it. I tried a .001 shim under the flats and then in front of the breech face, and all movement disappeared. When I tried a .002 shim in either location, the action wouldn't lock. This is a maddening thing I have seen a few times. Not really worth the cost or effort to fix. I have seen this looseness removed before by a piece of stainless ship stock Loctited into the hook. Reversible and stops the irritation.
I want to try thisas a hammer uppland gun.I am going to try it first with some Polywad Spreaders I have to see how I shoot it. I may have the barrel chokes reamed out to the proof dimensions. Wouldn't that be a hoot? Ream the chokes to restore it to original!