With reference to your post 4, the problem with your plan is that a .22 caliber gun is not a serious self-defense weapon, unless wielded by an expert who could easily place a couple rounds to the chest and one between the eyes (assassin style).
From what I read, the rock-bottom caliber for the average person is a .380.
Here’s an earlier FR posting about .22LR lethality:
http://www.freerepublic.com/focus/f-.../2931390/posts
But wait! There’s more!
.22LR has a secret that makes it far more lethal. Unlike any other caliber, it tends to “nick” internal organs in ways not obvious during surgery. So the bullet is removed, the patient seems to be recovering, and suddenly they get a very high temperature from extensive peritonitis.
And then they die. The peritonitis hits so hard and fast that even massive antibiotics use cannot stop it from killing.