Серия фотографий (из сети) наталкивает на мысль, что Double Fowlers имели место быть на полях Гражданской Войны в Америке.
Вот с описанием: Shotguns have been used in America's wars since the revolution, only then they were called "fowling pieces." Early units of Confederate cavalry were armed with shotguns and some remained in service until the end of the War Between the States.