You will not have the final say on whether or not your use of lethal force was justified. Other people will be deciding that. So if you think you were justified but the DA and/or grand jury disagree, it's not a "good shoot" unless your trial jury decides that it was. See, for example --
With this sentence you imply all shooting incidents go to trial and therefore requires a trial by jury.
You pretty much make it as though a shooter is guilty until proven innocent.