The stuff about handloads is bunk.
First, you would have to be charged with some sort of crime.
The only thing that is argued in a felony criminal case are points of law. If handloads aren't illegal then they can't enter into the picture.
Now OTOH if you were to be sued in civil court by the perps family, all bets are off.
BTW, INAL, but that is my understanding of the situation, FWIW, (probably nothing)