Adam;
With the caveat that I am not a lawyer (who would admit that if he was

) and don’t play one on TV, I have asked a lot of them and a few judges.
I got the same answer you did...if it is a justifiable shoot, it is a justifiable shoot. If it is not the prosecutor will use any means available to hang you.
Riposte
PS - we had a guy nearby who did a weekly call in legal show and he told this story: "I was driving my mom to town when we passed by a cemetery and she happened to read one of the tombstones next to the road which read 'here lies a lawyer and a good man'. She turned to me with a quizzical look and asked 'why did they bury two men in one grave?' "