Oof. My apologies for making you feel threatened - I've read that document in its entirety (and the original) more than once. You are really taking offense here and I've yet to insult you or your character. Paragraphs are... laughing at me? I shot myself in the foot? I have nothing to gain nor lose from this debate (though you're trying your damnedest to turn it into an argument). Anyhow, moving on. You're losing focus of the subject again. Caliber/weapon is what this debate (this is your thread) is about. Not random numbers of random calibers. The FBI doc has awesome info, and as it says - follow-up shots are always a good idea; you might need 2 shots to make it happen. I'd rather be shot twice by 9mm than once by .45 any day. Check out that last paragraph again (probably one of the ones that's laughing at me): "...the only way to increase bullet effectiveness is to increase the severity of the wound by increasing the size of hole created by the bullet." Bigger caliber, bigger hole. .45 is the largest handgun round in DayZ. See where I'm going with this? You shoot a human body with a .45 once. It either stops, or doesn't chase you for long before complications restrict such. You read the document - nervous system trauma, major organ trauma, and blood loss are why guns work on people. This functionality was removed from DayZ, but was realistic. Sometimes it'll require a second shot. That's cool with me. Of course no round is ever 100% guaranteed to incapacitate or kill, regardless of firearm or caliber. Just like I'm not 100% sure that I won't be hit by lightning tomorrow. You ignored many of my points, but this seems to have become an emotional endeavor for you, so I understand. Typical LEO rounds (9mm, .40 S&W) have been found to need a couple connects to kill/incapacitate. There is another FBI doc floating around that has a ton of statistics and says in all but extreme cases, one handgun wound of any caliber ends the confrontation 99% of the time. I'd post the source if I could find it, but alas I can't. Plus, "ends the confrontation" doesn't absolutely mean death or incapacitation, so grain of salt etc. Yes, I know handgun shots don't physically knock people from their feet. There are plenty of videos of crazy people letting their friends shoot them while they wear III-A protection/plates. A 120-lb woman running into you is ~1200 joules of energy. Most .45 rounds deliver around half that. I'll end with the last sentence of the FBI document (my point has been the .45 is big and makes big holes that leak lots of blood): "Of those that will penetrate, the edge is always with the bigger bullet."