Originally Posted by
Agall
You're right about .22lr and its lethality, statistically even. Anything that isn't causing substantial hydrostatic shock is just poking holes in people, which obviously can still be lethal, even firing .22lr out of a handgun. Small but fast projectiles like 5.56x45mm out of a sufficiently long barrel at a given distance has a hydrostatic effect when entering fluid which creates a large permanent wound cavity in comparison.
Personally either 5.7x28mm out of a +5" barrel, 5.56x45mm out of my 14.5" build, or my M1014 clone with #4 buckshot (which is practically 27 shots of .22lr at the same time) would do the job. Luckily I don't have to worry about grizzlies where I live otherwise that M1014 would have 1oz slugs.
Plenty of people on both sides don't properly learn the legal and mechanical/chemical parts of firearms, it is genuinely a lot of information to sort through, especially given how complex and nuanced US firearms laws are and the amount of engineering knowledge required for the latter.
Even as someone who owns several .22lr firearms, one of which that can go nearly a whole 500rd box without a malfunction, I still wouldn't rely on it for any reason. Something like 5.7x28mm can do far better at with more energy, reliability, and ballistics. Its still like +$0.50/round in the US but that's better than when I first got into it at $1.50/round.