:: Center-of-Mass [CoM] is more important than violently stopping the goblin. ::
To be detailed: when violently stopping “the goblin” with a magnum load, it is conceivable that members of my family will look on the physical result of that shot and necessarily get caught in the throes of retching (OK, they may vomit in the face of human destruction. We are, after all, compassionate Christians but cherish our liberty).
With appropriate training, creating a small hole in [CoM} and then completing the action (DBLTap) might go better for my family who would need to, in the end, live with taking a human life.
N’cest pas?
By forcing you into a position that required you to shoot them, they've forfeited any claim to humanity.