I didn't mention it in my initial response but I'll mention it now. I have an original Winchester model 1886 in 40/82 (one of it original calibers). It shipped from the factory in 1895 according to Winchester. It's in fine condition, although there is a missing ejection mechanism that mounts on the left receiver wall (you can see the screw hole). This prevents the cartridge from actually ejecting although the slide 'presents' it sufficiently to top ejection opening.
Believe it or not, I bought it from a buddy during high school. He was looking for cash for the Junior Prom. I had a choice of this or a Parker 10 ga. double barrel. I paid $15.00 for the Winchester. That was LONNNNNNG ago.
You chose - wisely. (Indiana Jones - The Last Crusade)
Did you try to find a replacement part for the gun, or do you prefer not to shoot it? Dixie Gunworks might it have it.