Over at the debate over shower carry, TTAG commentator Don made an excellent point about .22 as a defensive caliber. I think.
As a personal experiment, take a phone book or two and tape them together. Take an ice pick and drive it into the bundle with all of your strength. Really get your weight behind it. I’m saying drive that thing so hard you feel the shock through your bones of your arm and you nearly sprain your wrist. Measure how deep you got and think about how many more times you could do it before needing a wrist brace . . .
Now shoot it with a decent quality .22 LR. Measure how deep it went. Dig out the slug and look at it. Contemplate how easy that was compared to spraining your wrist.
Next shoot it with a decent quality .22 WMR. Make sure there is nothing of value behind your phone books.
I’m not saying .22 should be considered as an ideal defensive caliber, but people really seem to have a wrong idea about the power behind it. Numbers on paper don’t do it justice. An intuitive experiment such as this, comparing it to your own body strength, is elucidating.