In this episode of What the Fuck America, a retired army kernel goes head to head with a lifelong fed. Colonel Tucker declares before the court that...
spoiler
...NATO 5.56 and/or (?) 0.223 caliber ammo can decapitate or split the upper body from the lower in a single shot. To support this claim, he makes up a story about a marine and then describes the Iraqi children he saw torn in half.
Did this hero just self report? It also turns out that your average lifelong war criminal doesn't really even need to know how guns work lmao
Right...5.56/.223 are very fast rifle rounds relative to other similar calibers, which is probably part of how this sort of myth gets started
IIRC, it typically has the opposite problem to what colonel Tarantino is lying out his ass about in the above testimony; it easily over penetrates because of the high velocity (and it will not rip people in half with one shot)