Here's an interesting story from Massad Ayoob.
More than 10 years ago, my friend Mark Seiden called me in on a murder case in Miami that Janet Reno, then State’s Attorney for the county in question, had ordered prosecuted. A woman named Mary Hopkin had killed her common law husband, a man named James Yarolem.
James was in his forties. Mary was 63. Her life had been hard, and when she found a younger man who convinced her he loved her, she took him into her home. This did not turn out to be a wise decision.
Mary worked. Jim didn’t. He drank and smoked up all the money she brought in. He abused her, with the classic escalation. First, verbal derisiveness. Then the shove with the palm. Then the slap of the open hand. Then the blow of the closed fist. The time came when she confronted him and said, “Jim, you drink all my beer, and you smoke all my cigarettes, and you won’t get a job, and … I think it’s time you left.” Even then, being in the classic denial pattern of a battered significant other, she couldn’t bring herself to say, “Oh, and by the way, you beat the crap out of me whenever you feel like it.”
She didn’t need to say it. Jim didn’t handle her declaration well. He began to beat her up with more vigor than before. She went to call the police, and Jim ripped the telephone out of the wall, wrapped the phone cord around her neck, and strangled her unconscious. He left her for dead and went off to the nearest bar. When Mary awoke, she crawled—she couldn’t walk on her arthritic and aging legs, she crawled—to the nearest trailer to hers and when she got there blurted, “Call the police.”
The cops arrived. When Jim came back Metro-Dade officers were there. They arrested him. When they dragged him away, the cops testified later, he was screaming “Mary, you f---in’ *****, I’ll kill you for this!”
Very soon thereafter, he was out on bail and he came to make good his threat. By now, Mary was in terror of him, and had borrowed from her son the cheapest revolver available, an RG .22. The RG is the gun that Handgun Control Inc. is trying to talk about when they rail on about “Saturday Night Specials.” If you left it on a hot stove it might melt.
Jim pounded on the door like the big bad wolf. “Mary, let me in!” “Jim,” she answered, “I know what you’re going to do! I have a gun! I won’t let you kill me! Go away! Don’t make me shoot you!”
He didn’t listen. He smashed the door off its hinges and came at her, and she fired three shots. All three .22 bullets hit him. He turned and ran, got about 20 feet, and collapsed and died. To make a long story short, she was charged with murder.
The officer in the original post couldn't stop the BG with his service caliber weapon, but a little old lady with a .22 did drop the BG. It just goes to show there's no real rhyme or reason to most shooting incidents.