Grapeshot from private property at the Battlefield at New Market Virginia,

I recently attended a hunt at a piece of private property that was a part of the Battle of New Market in New Market Virginia. The farm is currently used for raising sheep. I went with a group from the Monroeville Area Metal Detectors Club out of Monroeville, PA. There were about 17 metal detectorists that attended. About half of the group found Three ring bullets, one found a Connecticut Militia button and another found a spur. I found a piece of grapeshot (about the size of a golf ball) that would have been loaded into a cannon with about 20 to 30 other and fired at close range at the enemy. I cannot tell whether it was fired by the Union or Confederate sides.