glummer,
Can you tell we've done this here a time or two before?
Let me try approaching this a slightly different way. Nothing good can possibly come of loading a home defense shotgun with rubber buckshot.
I don't know your state laws on self defense- that's your job. But no jurisdiction I know of differs from some very basic legal tenets. As has been explained, a shotgun is a lethal weapon, period. If you're morally and legally justified in shooting a person AT ALL WITH ANYTHING, then you're justified in killing. If you AREN'T justified in killing, you aren't justified in shooting ANYTHING out of a shotgun. I know of cases where people have been killed with BLANKS fired in a shotgun- it happened to a LEO not far from here in a training scenario a few years ago.
So with rubber buckshot, you're going to either kill or injure someone you aren't justified under the circumstances in shooting at all with anything. Either way, you're had legally. You're probably going to jail, and likely getting sued for everything you own to boot.
And if you ARE justified in shooting, then you're NOT going to kill- or maybe even not STOP- someone who needed killing- or at least stopping. What happens if that one shot with rubber buckshot is all you can manage to get off, and it fails to stop your attacker?
Do yourself a favor- please go to
http://www.teddytactical.com/archive/MonthlyStudy/2006/02_StudyDay.htm and study a while. At the very bottom of the thread at
http://www.thehighroad.org/showthread.php?t=396584 there's a glossary that will help with this document.
Talk to a good criminal defense attorney in your jurisdiction, and find out for sure what the law regarding self defense is in your jurisdiction. Nothing anyone here says can substitute for your personal knowledge of black-letter law and case law regarding self defense in your jurisdiction. Again, developing this knowledge is your responsibility alone. And you DO NOT want to learn it in the courtroom sitting at the defendant's table.
Best wishes, and Stay Safe,
lpl