So my two cents... all of the rifles seem pretty unrealistic. That being said, as many people have pointed out, ANY projectile can be lethal. I think damage of the M4, SKS, etc. should all cause death sooner if hitting vital areas. If you hit a vital area with a bolt the same should be true. One of my problems is many of these shots (and hits from melee) should cause unconsciousness. And actually as i think someone pointed out (not sure because i just skimmed the post) arrows will pierce body armor (just like knives) and rifle rounds wont, unless the plates are hit many times. That being said, about 6 months ago I dropped a large wooden beam on my pinky finger when i was moving it at a wood mill. I caught it inbetween the metal jackstand and the corner of the beam. It almost took off the end of my pinky. Anyway, for about 15 minutes afterwards i was struggling to remain conscious. I was extremely nauseous as well. My vision went almost black for that time period as well. Now i admit it wasnt a combat situation however anytime you have trauma some amount of adrenaline will kick in. I have a pretty high pain tolerance as well. One of the first thoughts i had after the experience was how rediculous it is in movies when someone gets shot (by anything) and keeps on going. I know there are exceptions but i think in most instances a person would go unconscious even from a non vital area being hit. Feel free to troll. i just think it should be easier to knock someone out with the projectiles or from the trauma in general. and i think arrows AND bullets should be about the same when hitting a vital spot.