Posted by m&p45acp10+1: Back in the mid 1980's my aunt shot a man .... The cops that arrived on scene told her "good shooting."
No one should ever rely upon such a statement as legal advice.
First, the "cops" are not the final decision authority; second, one may always be charges at any later date up to and until (1) one has been tried and acquitted; (2) one has been pardoned (but that won't shield against civil liability); (3) the statute of limitations has run out; or (4) one dies.
We often advise people to limit what they say after a defensive action. That advice applies for a very long time.