I know, they mix up their terminology pretty often (or actively try to mislead people). When I refer to bell brass I mean more a type of snare drum, if that makes sense.Don't get hung up on the term "bell brass", as it doesn't actually exist as a defined alloy. The kind of brass used for modern (usually smaller) bells is typically higher in zinc content compared to say a red brass (higher copper content), so maybe drum manufacturers are riding on the back of that somewhat loose connection. Bronze is the traditional alloy of bell making, and a fairly well defined "bell bronze" alloy does exist. Bronze is typically much harder than brass, has a brighter sound, and usually a longer note.