I have three drillings with 16ga upper barrels and 6.5x58R Sauer, 7x57R and 9.3x72R rifle barrels.
Wilkes Drilling 16/16/6.5x58R
JP Sauer 16/16/7x57R
no pics of the 9.3x72R
I have a little French sxs, early 1900's that came off a French ocean liner that was used for clays off the fantail and was a nickel plated but very worn now and a Marlin Model 90 26" IC&M