So here is what I know so far
My friend was in a gun shop, and a guy walked in wanting to sell and old gun. The shop owner said he wasn't interested, so my friend headed out to the parking lot, and this gun along with it's holder was in the back of the guys truck. My friend bought the gun from him along with it's history. So for about 10 years it hung in my friends rifle shop, and he told me about it. Well I went to visit him and became infatuated with the old rifle, and told him I would love to own it. When he came to our club shoot, he told me to get my **** out of the back of his truck. I was so thrilled that he would entrust me with it's ownership.
He remembers the gun was from a cabin in West Virginia, and he is still looking for the documentation as type this.
The caliber is 40-45 range
I tell you what the bore is better than I thought, it's a mirror with good rifling
Here is the gun as it was when I saw it in his shop
There is evidence that the barrel is much older than the rifle. There is areas where older underlugs were installed for a different rifle. He thinks this barrel is a hand forged barrel from an old flintlock