Woodland Archery's site will either make you laugh or scream, depending on your temperment.
That is not a bad thing to defend your life with there, and shotguns are a lot easier to learn to shoot well in a high-stress defensive situation than a handgun. 12 gauges must be just plain terrifying if you are at the wrong end of one.
But whatever you do, don't chose the Woodland Bows 48" plains Indian bow. They state it is very maneuverable from the back of a horse or the confines of a home hallway, can be left strung forever so it is ALWAYS READY TO SHOOT, and is accurate to 15 yards. Go read the text. It is awesome. But, if someone can convince me that they know what they are talking about, I may keep a little medieval handgonne / hand cannon next to my bed. I just have to make sure and light the slow match and load it before the bad guys can get to me.
I can then beat the other burglers with it, or melt their eyes out if they don't mind holding still for the slow match.
Dane