the old single shot guns made from older blackpowder military rifles dont have many enthusiast today
interesting history, than made for export into the colonys because they were cheap and - being single shot and smooth barrel - inferior to any police and military rifle of the colonial power. other sold at home were bought probably most times by farmer and so called field warden for crop protection

this ones are better made because of the checkering

20 ga,ex belgian Comblain rifle http://egun.de/market/item.php?id=7013828

old austrian muzzle loader, after 1866 converted for breech loading with the Wänzl action and decades later build into a 16 ga
http://egun.de/market/item.php?id=7032358