Very small indeed, a single .22LR bullet is probably no bigger than an inch and a half
.223 inches for the .22LR, .224 inches for the .22 WMR.
It fires a 22LR projectile. "Power" will depend on bullet weight and velocity.
Yes
they both say 22 knock yourself out
A .22lr AS is a little more powerful. It's very similar to the .22 WMR
Approx. 1 mile
It can. The bullet if it doesn't expand it will tumble, and will not have the energy to punch straight through. The bullet will almost use the tissue as a trampoline. Tissue is very flexible. I actually know someone this happened to.
22 magnums actual caliber is .220. If you look at the tip of the bullet 22 mag has a sharp point. On a 22lr it is rounded and 22 mag is bigger around. Look around the rim and it will say 22 magnum or 22 lr.
It all depends on the hit. Some hits, it can. Others, it won't.
Unimpeded, a .22LR caliber bullet can travel up to 2000 yards. Its effective distance is, of course, much shorter than that.
There are more people killed each year from a 22lr than any other gun!! There are more people killed each year from a 22lr than any other gun!!