Could it be a needful conversion from a field gun? It won't have a full choke anyway, just a full choke barrel cut off. Unless you've tried to slip a dime in and it's closed up? I think you'll find it's cylinder bore.
Could it be a needful conversion from a field gun? It won't have a full choke anyway, just a full choke barrel cut off. Unless you've tried to slip a dime in and it's closed up? I think you'll find it's cylinder bore.
Regards, Jim