There is some difference between Damascus and twist, with twist generally being considered the weaker of the two. That said, there are many folks who like to shoot their 100+ year old guns now and again, even use them for hunting. Caveat though, their guns have been thoroughly checked for issues and they only use low-pressure rounds from the likes of RST or Polywad. Chambers are typically shorter than modern ammo as well. IF you intend on firing, it needs to be checked, not by some local parts changer, but by a seasoned pro who knows old guns inside and out; otherwise, admire it from your easy chair as it resides on the wall.
1900 was when the transition from BP to smokeless was occurring