While I love to shoot old guns I would give some serious consideration to not shooting this one.
This shotgun has seen some tough times. Based on the outside it has seen some use and abuse most likely.
The bores and condition of the barrels and breach are everything on these old girls for safety. While we dont know the condition of the bores if they are anything like the outside of the shotgun, I would not shoot it most likely.
Use it for what you bought it for, hang it on the wall and enjoy it. Spend a few more dollars and upgrade to a better condition original for shooting.
I bought and sold quite a few shotguns when I first started playing with old guns. Played with some, fixed up some. If I lost money on any of them, I caulked it up to my education. Even got taken a few times, but I learned a lot.
Just my opinion
Fleener