Re: Very old and Loaded
Can we assume that this is a muzzleloading gun?
If it was properly loaded back when, it is still capable of firing, but not without either a percussion cap (if a caplock gun) or priming powder for the pan (if a flintlock).
I would not recommend a novice fool around with a loaded gun like this. If you want to make the gun 100% safe you can take it to a gunsmith. Any gunsmith can pull the bullet and powder charge for you for not much money.
This probably isn't necessary for safety, however. Without a separate percussion cap or priming the gun will not fire.