The Winchester 1887 is not a Rifle it is a shotgun of JM Browning design.
The Winchester 1887 was made in 10ga & 12ga.
It is a joy to shoot!
The Family has one in 10ga. Not nearly in that good of condition - probably hasn't been fired since the 1930s. I'm not sure I'd even want to try.....Dang thing is a BEAST.
The one this guy had was a modern manufactured Chiappa Firearms copy. there is a big cult for this gun where competitions are held and only Winchester 1887's are allowed to be used.
Mine is a 12ga, was bought new by my great grandfather in 1894, when it was handed to me it had not been shot since 1930 or so, I did the research and created some loads for it. It's a joy to shoot, I just hate cleaning it!
Lol, at first my uncle was horrified that I was going to shoot such an unsafe gun but after watching me shoot it he tried it and thought it was pretty damn cool he got to shoot his grandfathers gun.
All you have to do is check it out to see if it's safe to shoot if you don't have the knowledge to determine that take it to a competent gunsmith who knows old weapons and ask him to take a look at it. then do some research, create some loads and have a ball shooting it!
Keep in mind you have to make your own loads, this gun is a black powder gun only and will self destruct with modern loads.