what exactly are "blanks" in terms of bullets? i googled it and all i could find were explanations with words i didn't understand. er. so i know that they are different from bullets because they don't harm the target.
so, does the blank bullet actually come out of the gun? does it pierce the skin of the target?
in "not-blank" bullets, is it the gun powder or the penetration that injures the victim?
if it's the penetration, and if blanks do penetrate, how come that doesn't cause injury?