The usual braying repetition of half-understood misconceptions.
The kernels of
plausible valid theory in that statement are so small as to be largely discountable.
But here they are:
1) If somehow your self-defense claim is not so clear on its surface that you do end up tried for manslaughter or murder, the prosecutor COULD,
perhaps use your interest in weapons -- to include studying their workings and modifying them -- as a way of discrediting you as a reasonable person in the eyes of the jury. S/he could,
possibly argue that you were the sort of person who WANTED to shoot someone else and sought out the opportunity -- or some such thing. Thus making your claim to have HAD to shoot to save your life false.
Of course, this is a long shot. Your case would have to be very questionable to begin with, and then the prosecutions reasons for fighting your self-defense claim would have to be so thin that they're trying, in essence, a character defamation ploy to win a conviction.
This is a far cry from saying that there is a LAW against using even the wildest "race gun" in self-defense. There is NOT such a law.
2) If, somehow, the prosecution was to argue that this was an accidental shooting, a "hair trigger" could be pointed to as a contributing factor. But then, your whole self-defense claim would be invalid. Self defense means you're saying, "
I did it, and here's why." Usually that completely precludes any claim of accidental shooting. So, again, the circumstances would have to be quite odd for the type of gun to really matter.
The long and the short of it is, very few police officers (...especially "Deputy Constables"
) have a really good grasp on what self-defense law really entails. They just don't see very many lawful self-defense cases, and aren't deeply involved in the prosecution or defense of them. They know they need to investigate and arrest in the case of almost any homicide (and ANY homicide in some places) and that's often about it. Others will decide whether to prosecute and on what grounds -- and on what grounds the defender will be exonerated of wrongdoing.
In other words...DON'T ask a cop about defense law.