The early Model 1897 16-gauge guns were chambered for then standard 2 9/16-inch 16-gauge shells through the 1920 Winchester catalog. In the 1922, 23, 24 and 25 Winchester catalogs the Model 97 is only listed in 12-gauge. The 16-gauge Model 97 chambered for 2 3/4-inch shells first appears in the 1931 Winchester catalog.