I dont know if buy the "bone was not hit" deal.
Does not look like the typical 556 would to be honest. I have seen many ANA shoot each other within close range with M16 rifles. Looks very similar to a ANP officer that was hit by a 7.62x39 at 300M in pretty much same location.
Could be 5.56 but i agree looks more 7.62 even seen some longer range 300 win mag that looked similar in the end to hard to say what actually did it. bullets can do funny stuff.


















































