I believe you are asking about an air gun that fires a 22 Cal pellet. The pellet is driven by air not gunpowder. Seewww.crosman.com to see several different Airgun models.
No.
Gun shop
No
Yes.
Any firearm chambered for 22
Up to 9
Depends on the gun. A .22 will have very different pressures from a 30-06.
I believe the smallest bullet in terms of diameter is the .17 HMR. It is a .22 casing that is necked down to accept a .17 caliber bullet.
very, during gun safety as a child, I saw a video that showed how a .22 cal bullet can bounce, around the body and tear it apart.
You will have to state whether it is a rifle or handgun to get an answer.
It all depends on the gun and its specs like the guns velocity.
NO! The .22 mag case is larger in diameter than the .22 long rifle case thus the chamber of a .22 mag gun is too large for a .22 long rifle bullet. If the bullet does fire, the case will split with unpleasant and innaccurate results.