projectile

So, Ive hunted alot now that I am in Va, as well as while fixing a door to the dirt basement came across a circle dent in my outer wall- there was a battle nearby within a few miles of my home. The age of my home I am unsure as its got many add ons to it, but it does look like it got hit by a...

I bought this iron item at a local estate sale today. I was HOPING it was some sort of Civil War (or other) projectile, but I'm really not sure. I would love to hear from you regarding this piece, which weighs in right at five pounds. Thanks so much! Jack.