smaller the number, the smaller the caliber.
Go to a gun shop
the 12 guage is a caliber not a gun
a .45 caliber.
What caliber of man are you looking for? What caliber of gun are you looking for?
The short answer is no. The longer answer is, you might be able to get a .40 caliber cartridge to fire from a .45 caliber gun, but it may damage the gun, and even if it doesn't damage the gun, it will cause other problems. In general (with only a few exceptions) you should never try to fire any cartridge in any gun other than a gun designed for that caliber.
The word "caliber" refers to the diameter of the internal bore of a gun or firearm barrel.
It is the standard .68 caliber
Caliber has nothing to do with it.
45 caliber Machine Gun and 50 caliber machine gun
Fifty caliber, but it is more of a toy than a paintball gun.
No. They will be too large to fit in the gun or be fired out of the barrel.
A 22 caliber rifle is a firearm and a BB gun is an air gun (Not a firearm) Now if you are asking about a .22 caliber air gun then the difference is in the size of the projectile. A BB is a hard round .175 caliber ball. The .22 caliber is a larger size pellet.