 Proponents of the concept point to human autopsy results demonstrating brain hemorrhaging from fatal hits to the chest, including cases with handgun bullets.Thirty-three cases of fatal penetrating chest wounds by a single bullet were selected from a much larger set by excluding all other traumatic factors, including past history.An 8-month study in Iraq performed in 2010 and published in 2011 reports on autopsies of 30 gunshot victims struck with high-velocity (greater than 2500 fps) rifle bullets.