Back in the late 80s in college a guy in my dorm made a combustion gun. We were watching him shooting spuds from the dorm lawn into the air not caring where it

Back in the late 80s in college a guy in my dorm made a combustion gun. We were watching him shooting spuds from the dorm lawn into the air not caring where it landed. Later that evening he was arrested because one spud gave the parent of a visiting student and orbital fracture 300 yards away and her eyeball literally fell out. Since he was doing it in front of the whole dorm the police had no trouble finding him. He lasted only two weeks in college no idea what happened after he was arrested. Be smart if you make one of these things they are super dangerous.