If you are claiming self defense, the prosecutor does not have to prove the core elements of the crime -- for example that you intentionally shot someone.
This implies a presumption of
unlawful action. Self defense being affirmative defense does not mean that the defender comitted a crime and needs to justify that. He committed the
act of homicide (or assault with a deadly, whatever it may be); Whether or not it was lawful or criminal homicide is where the presumption of innocence until proven guilty must be.
So you will at least have to put forth evidence establishing prima facie that the elements necessary for your act of violence to have been legally justified have been satisfied.
Would not the claim of self defense and your testimony be just that? From there, as you said:
The prosecutor will have to convince a jury beyond a reasonable doubt that your actions were not justified.
I know I'm wayyyyy oversimplifying the process. Where the difference between what you're saying and what I'm saying lies is in your calling a justifiable homicide a crime and my calling it an act. It is not a crime if it is justified, and the prosecution has to prove that it wasn't. Or at least that is the spirit. Reality, I know, leaves the defendant proving that he
was justified more or less in the form of refuting the accusations of the prosecution that would make it otherwise.
I guess my question to you, then, since you're the lawyer, is why are we calling it a crime rather than an act? There are many actions that are legal under some circumstances and not under others. To me, that indicates that if said act is comitted under the lawful circumstances, it is not a crime in any way, shape or form. If you are claiming self-defense, you have admitted to an act, not a crime. The prosecution must prove that the circumstances under which the act was committed were
unlawful if they seek a conviction. If they cannot prove that, then you have not (in the eyes of the law) committed a criminal act.
If you don't meet your burden of producing evidence,
Once again, I ask, does not the claim meet that burden? Beyond your claim of self-defense, the evidence submitted will be that gathered by investigators and given in the form of witness testimonies (if any). The evidence will be there, the question is whether or not it matches your story. I just don't see that there's much for the defendant to provide beyond his claim of SD and testimony of events, which will then be scrutinized by investigators who will report and make recommendations to the prosecutor.
If you say in your testimony that a man threatened to kill you and then charged you with a knife, that would mean that you were in imminent danger of serious bodily injury or death, thus justifying the use of lethal force. The prosecutor would now have to prove that you were
not in imminent danger of serious bodily injury or death if he wants an assault/manslaughter/murder conviction. From there, either the evidence and witness testimonies support the self defense claim, or they don't. Again, I know I'm oversimplifying it. We all know that there is a tremendous amount of fancy footwork, legal mumbo jumbo and other minutiae that ensue with any such trial, especially when certain pieces of evidence or witness testimonies are allowed or disallowed/discredited (or "lost").