It looks like a 31 or 36 cal revolver bullet. Can you measure the diameter calipers? It can be a CSA or Both sides bullet depending on the diameter.
Very nice find!
As VaMark stated it could be .36 caliber, but need diameter and length to be sure. It could be a .42 LeMat or a .36 savage .386 x .643 or Remington .386 x .638. Nice bullet though..
Thanks guys, I don't own any calipers but will buy a pair soon. I leave for Ellijay Ga this morning for some R&R. But of course that means metal detecting.