Here in Finland those type of shotguns with rifled barrels were popular from the end of 19th century to first decades to 20th century among some rich people (officers, shopkeepers etc.) who in winter bought sleeping bears from local people i.e. information of place where bear dreams his winter sleep. Then they just went with horse and sled near that place, then walked/skied to bears seat, awoke it up and then shot it. Double shotgun with rifled barrels and slug loads was good weapon for short distances.