been reading through this one a couple of times now, and what I keep sticking on, is comments made a few years back, several times, by Massad Ayoob, about using home brew instead of a more legally defensible factory load such as local law enforcement issues.
Theory being, survive the deadly encounter, lose the legal aftermath. ie: your in prison, your savings account is gone and everyone else in the household is destitute and homeless.
Your honor, my client, being the responsible homeowner, did his research, and loaded his home defense weapon with the same ammunition that our local police officers carry on the street.
Your honor, this obviously disturbed individual was not satisfied with loads used and approved by local law enforcement or the FBI, no, this danger to society made the decision to concoct a load that was even more dangerous, more deadly, hoping that he would get the chance to kill someone in a horrific manner.
There are enough variables as is. I'm not going to willingly hand a dirty prosecutor or high paid civil lawyer a golden rope with which to hang me.
my opinion, your mileage may vary. everyone has to make their own choices and gets to live with the consequences of those choices.