Thread: Shotgun shooting like a solid round?

The 13 refers to the gauge round ball to be used in solids with that gun, it was std practice to use one gauge smaller to avoid embarrassment with tight chokes.i
Target products saloon cowboy action stuff gives a pattern width of about 3 foot at that range with a 16 inch cylinder bore.
What's the ammo any chance it could be a solid or are you getting confused by a hole made by the wad?