From KOAM TV:

A homeowner in Wyandotte, Oklahoma is awaiting damage assessments after an artillery shell entered his home.

It was fired at the Oklahoma Full Auto Shoot and Trade Show on Saturday, around 3 miles a way.

[ . . . ]

A 105 howitzer artillery shell, 14 and a half inches long and 3 and a half inches across, was lying on his bedroom floor.

It entered from the outside wall, hit the ceiling, and damaged another wall, all while he and his wife were home.

Video at the link. The range owner says they took every precaution possible. Apparently not.