Doozie Registered User
Well, you'll be credited if they exhibit it. Legally, if its an artefact, you are obliged to hand it in. The museum are very happy identify and advise you otherwise.
gravensteen Registered User
Could be lead shot. I've dug up lead shot (from a rifle, usually late 19th, early 20th century rifle, British Army standard issue) and when that hits something hard, it can dent.