Thanks to everyone for the help,and information.
This shotgun does have some sentimental value as it was my grandfathers on my mothers side of family.She tells me that every new years he would go upstairs,and fire both rounds out their
bedroom window,and my grandmother hated that.
And thanks for links that I will check out.
I will have to get a better look on the flat spots on barrels
for a small number as per choke value.