This video shows the impact of a bullet at long range and short range
All of the calibers can be deadly
The .22 can kill too and make dangerous injuries
9 mm is really dangerous causes mostly deadly injuries
But u can take some hollow-point bullets for a bigger wound channel
.45 ACP is very strong, hits fast and strong!
But for personal protection don't go under 9 mm, it's just better to stop your attacker fast!
Guns must be handled right and with care, don't forget it!