Yes
If it is .38 special, this is correct. There are other types of .38 caliber other than .38 special, however.
Yes.
No
NO!!
yes. the 5.56 is the 223 caliber ammo.
If your Iver Johnson is marked for the .22 WMR.then yes,if it is not then do not attempt to load or shoot .22magnum ammo in your rifle.
Air rifle ammo is as simple as a BB. the next ammo is a Pellet. Pellets come in different sizes and weights. The size calibers are: .177, .20, .22, .25, .357, 9mm, 45 caliber and finally 50 caliber. Each rifle or gun is designed to shoot a certain size.Crosman,Beeman,Daisy, GamoH&Nand a dozen other companies make pellets for air guns.If you are shooting Airsoftthen theBBs are generally 6mm and made of plasticAir rifle ammo is either BB's or Pellets, depending on what the rifle is designed to shoot.
Can I shoot 380acp caliber out of my 32 pistol?
No
No. Only shoot the caliber printed on the barrel.
No.
Yes. The 44 magnum can fire 44 special ammo in the same way a .357 magnum can use .38 Special.
Yes, you can shoot .38 ammo in a .357 firearm. The .357 firearm is designed to also shoot .38 caliber ammunition.