But the BSS and earlier Citoris are included in a general warning not to use steel in any Browning guns that aren't specifically mentioned as being approved for steel.
For several years my primary waterfowl gun was an early Citori that started with fixed chokes, then retrofitted with Colonials. Only problem I ever had was shooting steel Ts on a snow goose hunt. Seized the choke tube but did no damage to the barrel. Got the tube out with some effort (and some damage to the tube), then ran a new tube in with nothing more than fresh grease.
