Steve - If you could give me some more information - I'd take a crack at it. I'm from that area and a fairly familiar with some of the odd finds that have turned up.

What makes this cannonball unusual? What is the size? Weight? Hollow or solid? Round? or Tapered for use in a rifled cannon?

If you can send a photo to my Email - a picture is worth a half a zillion words at times.

Gene