I wouldn't take that shot, but nowadays, hey, the kid might've been shooting that rifle and studying ballistic programs since he was 7. Maybe had a cheat sheet taped to his stock and daddy ranging for him with a laser.
"Always place your clothes and weapons where you can find them in the dark"
"Understand that the enemy is not the enemy in his own eyes ;this may offer you an opportunity to make him your friend. If not, you can kill him without hate, and quickly."