How do I know this? O.C.G.A. 16-3-23 (2010) A person is justified in threatening or using force against another when and to the extent that he or she reasonably believes that such threat or force is necessary to prevent or terminate such other's unlawful entry into or attack upon a habitation; however, such person is justified in the use of force which is intended or likely to cause death or great bodily harm only if: (2) That force is used against another person who is not a member of the family or household and who unlawfully and forcibly enters or has unlawfully and forcibly entered the residence and the person using such force knew or had reason to believe that an unlawful and forcible entry occurred; The law does not limit me to advance prevention. That said, shooting a man in the back while they are fleeing get's dicey. You brought up the value deliberately, but did I know that's all they took from the jewelry box with felony amounts of stuff in it?