i had one that was a dixie import, probably a 4 bore, i would guess made in the early 1900's. i bought it at an auction, appeared unfired. barrel walls looked thin, and i was scared to fire i. took it to a gunshow and sold it a couple years later . paid about 90.00 and sold it for 140.00.
i did recently acquire a british 6 bore double [percussion] smoothbore. it is very solid and well made, weighs about 14.5 pounds. when the weather warms up, i will try it. have already gotten wads, etc fro track.