Can anyone comment on the 10-15 seconds for bleeding out from the heart? For some reason, I was thinking a bullet hitting the superior aorta or right ventricle(or maybe left, whichever one leads to the aorta) would cause BP to drop to 0 almost instantly and unconsciousness momentarily after. And for some reason a ruptured subclavian artery would cause unconsiousness in the first 10-15 seconds. As far as caliber not making a difference... Maybe not as much from pistol to pistol, but 5.56 to 7.62 seems to be rather substantial from what I've seen. Of all the bullet induced trauma I've seen (which is not much) the 30mm seems to have the best results, so why not get as close to that size round as you can?