I'm not trying to start a pissing contest- I'm just questioning. If people think that is starting such a contest, then I have my concernes.
First, the clown with the .44 wasn't a friend, we just buy ammunition at the same place. Please note the pronoun- it gives you my opinion of the guy.
Second, I'm not doubting that it is possible. There is a confirmed taking of an elephant, and moderately credible but unsubstantiated claim about a cape buffalo, taken with a .22. But I'm questioning it's regularity, based on the fact that I've got the skull of a moose hanging on my wall, and that is a lot thicker than a human skull, like the one I have on my desk. I've got to say that based on real world results in defensive shootings and failed suicides with the .22 and the number of people who've had is slide without doing serious damage, that I can't imagine that it would be even less successful on a moose. And I won't even discuss a body shot.
So I guess my question is, what was it's success rate? A survival situation, or ethical and honorable hunting practices, calls for a round that can take the game you intend to shoot with no more than two rounds and kills or weakens the animal due to blood loss and shock within a few hundred yards. Ignoring the ethical issues, if you have a .22 in a survival situation, the only time I'd ever suggest trying to go after anything but small game and smaller varmints is defensively. Anything else, while in theory possible, isn't a sure enough thing- wasting ammunition and meat is a waste of finite resources. When the poo has it the fan and a survival kit is now something real world rather than a mall ninja's wet dream, just as in Vegas, the house is favored. The deck is stacked and marked, and the stakes are too high to throw them away on long odds.
Survival isn't about what you could do, in theory, maybe, if the situation is perfect, and the gods are smiling. Survival is about what you can do, every time.