Originally posted by Scootter
A shot fired into the air will be "spent" and just tumble back down at its terminal velocity. It will be tha same as if you drooped it from a building and will not be lethal unless its a 20mm round with some weight to it. It is a myth that bullets fall to earth and kill, most of the rounds that kill from firing a weapon into the air are from an auto weapon and the user hits some around him or in a building due to not having control of the recoiling weapon.
I submit that you can not be killed by a small caliber weapon round falling to earth.
a bruise maybe
Somehow I doubt it'd be just a bruise... anyhow, I'd hate to be hit by a bullet dropping from the sky, because some moron was shooting up in the air just for the fun of it.
Even by a bruise, the person would be quite damn pissed off and would most likely call the police, which wouldn't be good for the shooter...
On yearly basis alot of people are getting wounded by this and some are killed.
If you're using 9mm (~115 grams) or kalashnikov 7.62mm (~122 grams, whole bullet I believe, reduce some 7-15 grams from the charge), it's almost the same when it comes down.
It'll hurt... and if it hits well, you're dead.
If this guy uses .45, then it needs even less velocity to do bad damage.