UPDATE: CT State Medical Examiner Says Bushmaster Rifle Did The Killing
"The .223 round is slightly lighter than the military grade version, but reacts the same on impact and is pretty much as deadly. It's designed to bounce around inside the body once it makes contact with bone.The AR-15 is the civilian version of the military's M16 and has been in production since Vietnam. The caliber is the same used in the DC sniper shootings. It was also used in the Colorado shooting."
