Question about .223/5.56 ammunition ballistics:
According to statements made by the coroner in the Sandy Hook Elementary shooting, the bullets all stayed in the bodies.

If, as some would have us believe, an AR was used in this crime something seems wrong, ballistically speaking.

Typical publicly available .223/5.56 ammo is FMJ, or even soft point; right? (I know that AR's come in a variety of calibers, but given .223/5.56 is by far the most common configuration, I feel safe in assuming this is the caliber of the AR owned by Adam Lanza's mother).

Without being too graphic, what is the likelihood of the rounds not passing through the bodies of your average kindergartener?

I'd love to hear from those with first-hand experience in firearm wounds.