My wife's mother's recent husband died. And in cleaning out his pile of "stuff" in his closet, they found three round balls that my wife gave to me. Two of them look like iron balls and measure between 0.95" and 0.99" in diameter. The other one is a round lead ball measuring 0.685" in diameter. I know he was an avid military rifle shooter and originally had several to a bunch of old military rifles including several 03 Springfields and 30-40 Krags. We had long talks about shooting in the last year or so and he liked talking about being a belly gunner in a B-17 during WW-II shooting twin 50's. And I heard him talk about his interest in the Civil war and the firearms of the Civil war. So, my question is, what could these round balls be from? A firearm of some sort? Maybe grapeshot from a Civil War battlefield? What would fire a round lead ball of 0.685" in diameter?