Bullets can only come back down at terminal velocity thanks to air resistance. Unfortunately, the terminal velocity for a .30 calibre bullet is around 300 feet per second; they only need to be moving at 200 feet per second to break the skin. While it’s not the same velocity they would have if people were shot directly, bullets falling from the sky can still injure or kill.
Bullets can only come back down at terminal velocity thanks to air resistance. Unfortunately, the terminal velocity for a .30 calibre bullet is around 300 feet per second; they only need to be moving at 200 feet per second to break the skin. While it’s not the same velocity they would have if people were shot directly, bullets falling from the sky can still injure or kill.
https://en.wikipedia.org/wiki/Celebratory_gunfire