It seems to me that, other types of cases excepted (accidental shootings etc), it doesn't really make any difference whatsoever "what ammo you used", or whether you "removed that magazine disconnect", or what type of pistol.
In a defensive shooting the question before the DA, then (if the DA passes it on) a Grand Jury, and maybe the Courts, will be "was this a justifiable homicide". Or, "justifiable use of deadly force" if your assailant doesn't actually die as a result.
It is mistake to try and softpeddle what is, afterall, DEADLY FORCE. Which is, by definition "that force which a reasonable person would know is likely to result in DEATH or serious bodily harm" (words to the effect). This is universal, the only variances being when it is justifiable - as in States that require you, if possible to retreat, say, from your home vs those who allow you to stand your ground etc.
I wouldn't try and "lawyerproof" your gun. Waste of time. Lawyers are in the business of "making a case", and if neccessary - making one, out of nothing. Better to make 100% SURE that you only ever use deadly force, when it is justifiable. Then you need only concern yourself with proving the applicable FACTS.
Responses to any challenges, concerning your "choice of ammo", or "what type of pistol" you used should be met with matter of fact replies. Because it IS "matter of fact". Superfluous fact.
Just tell the honest truth.. ".. because it is a reliable and accurate pistol".
"this ammo is accurate and functions reliably in my pistol".
In anycase, questions straying away from the subject matter of an indictment, the specific charges against you, should be challenged by your defense counsel (and if he/she doesn't you need to give them a PROD) or yourself if you find yourself without one.
Any questions about "ammo" or "type of pistol" can be rebuffed thusly: ALL pistols, using ANY type of conventional ammo, can be expected by "a reasonable person to cause DEATH or serious bodily harm". 'Nuf said.