I have an update to this gun's story. I submitted it's serial number to H&H for a records book history report. It turns out that this gun was manufactured as a ball gun without choke and without rifling and it remains now in original condition as manufactured. What insight PM thank you. I will continue with a sympathetic wood cleanup and repair and barrel polish and reblacken but the good news is the gun does remain in original configuration as manufactured. Thanks to all,especially PM.