​Hello, I need some help with a Savage 720 U.S. Military shotgun. I have a 720 Aerial training shotgun and it has **** asterisks on the barrel. I thought this would denote that this gun has a full choke. That being said I would think that * would designate a Cylinder bore, ** would mean improved cylinder, *** modified, **** full choke. Can anyone clear this up for me ? Thanks