Originally Posted by Dismount
I did that with a cinderblock and a .357 taurus once.
Only it bounced offa my forehead.
Yup, back in the Corps days we were shooting at steel pop up targets pretty far downrange (over 300 yards if I recall) with 240g. Lots of guys shooting, lots of rounds going downrange in bursts. Buddy standing behind me felt a bit of a punch (very little) in his flak jacket and sure enough at his feet was a mangled round.
Pretty unlikely event, but if you fire enough rounds down there, strange stuff can happen. Our assumption was that a round hit just right as target was re-setting, and did a rainbow arc back towards us. Could have been a round from anyone on the line.
But of course, he tells the story about when "I shot him with the 240"... I reply by reminding him of the time he turned his ankle and fell out of a gear retention hump in which I carried my pack, with his pack on top of my head for the last 5 miles.