Somewhere I have an ad for these. They were meant for duck and goose, canardiere.

Type 700 from the 1893 catalog. It sold for 300 francs in .22 long and 325 francs in .297/300. He also offered a 12ga in 1881 for 1500 francs with a claimed range of 150 meters with a spread of 3 meters.

Pete