Not a conspiracy theorist either!

That clip, which I thought I had seen before but had not, is jaw dropping. Not to mention mind expanding. Sorry could not resist. It looks, to this non-ballistically educated Brit, as if half his head disintegrates. How can there not have been at least two guns used? It also seems as if the first lot did not do that much damage, so whoever was behind the gun thought "Stuff this! Let's try something BIGGER!"