The .303 and 7.62 NATO pound was very pointed and would pass through a body. The 5.56 round was designed for the American M16 Rifle and has a very flat rounded nose that makes it tumble through the air. The idea is it causes maximum damage to the person that it hits, and 5.56 is the standard round now for all NATO Forces and they all use the same size round. It is rather like the old Thompson Sub Machine Gun that fired rounds at a low velocity so that they would do more damage when they hit some one. The Germans at one time thought that Dum Dum bullets were being used as the damaged caused was so much worse than they expected. No it doesn't -Can I ask what your source of information is please?