I heard about a guy who did that with a .22, it was way worse than you'd expect. Think he got some compartment problem or something where the wound channel would clog in a bad way and he'd have to massage/push it out himself, at home, in a bathtub.
I was told that a .22 can be worse than just getting shot with a high caliber because the .22 isn't likely to make it through bone, so it just ricochets around inside you for a bit instead of passing right through.
I'm not sure why you'd consider it large either, it fits trivially in the palm of your hand.
Are you maybe imagining that the whole cartridge would be fired? because it's only the very end bit that actually gets shot, the rest of it is just to hold gunpowder and the bullet in place inside the gun.
The actual bullet itself is about the size of a pea, i think.
I call it a weapon. They're all the same to me. Not that there's anything wrong with shooting as a hobby, but they're all dangerous no matter which type of gun.
Well obviously it didn't leave a small wound. You're not shooting with grapes, you're firing heavy pointy metal cylinders at 3000 km/h. No surprise that it will mess shit up.