It is still here.The cannon resides on private property at the Charbroil grill factory headquarters.I live in Columbus and did some research on where it was after seeing this post.I called the local museum ,the Civil War Naval museum ( here ) and the local historical society.
I was given the name of a gentleman, Mr. Joe Coley, who wrote an article for Civil War times on the cannon last year. The article should come out this fall.
Mr. Coley said it is owned by W.C.Bradly company ( Charbroil ) and resides on their factory grounds off Bradley Park Drive her in Columbus ,Ga. He said it is in somewhat sad shape. The cannon was recently painted , but the bore was in bad shape. It's a 2.75 inch hex bore. This cannon needs to be in a museum instead of located between three azalea bush's behind a fence so far off the road you would not notice it.
I will attempt to take some pictures and get them posted this weekend. I will also pick Mr. Coley's brain about what he knows about it and let the group know. Mr. Coley also told me two years ago , when we were in drought conditions he and others picked up 18-20 cannon balls out of the Chattahooche river below the old cannon factory the Columbus Iron Works. He also said their was about a hundred cannons in the river from when Wilson's raiders over ran the city on April 16th 1865.Can you say group dig. Later, Sodaman.