Larry,
I sent an email to a few contacts. Have to wait until they are done eating cheese and drinking wine and/or making love to see what they say.
Any chance of seeing a photo? If you can't get photos up on the board, email them to me and I'll do it.
That gun has some different dimensions-can you shoot one with 14 1/4 LOP and 2 1/4 drop? Nice, long, barrels, if you are into that sort of thing. Looks to be at the heavy end for French shotguns, also. Pheasant gun?

Best,
Ted