The value of an Iver Johnson Magnum 22 caliber revolver would be dependent upon a number of factors. Some of these factors would be the age and condition.
38 special is only a revolver caliber. that's like saying a 44 magnum revolver or a 500 special revolver. a revolver is a revolver
You can shoot them in a .357 Magnum revolver, but that's about it.
25-75 USD
Consult with a good gunsmith.
No. The .38 Special cartridge can be fired in a .357 Magnum revolver - and only a revolver, which does not require chamber headspacing - but it doesn't work the other way around. The .357 Magnum cartridge is too long to fit into a .38 Special cylinder, and the .357 Sig cartridge is in no way compatible, either with the .357 Magnum or the .38 Special.
We can't even make a guess without information. Make, model, caliber, please.
No. <><><> Above is correct- however, ,38 Special CARTRIDGES can be used in a .357 magnum revolver. The .38 Special is actually not .38 caliber, but .357 caliber. .38 caliber bullets, such as used in the .38 S&W catridge, cannot be used.
100-1000 or more depending on EXACTLY what you have.
About $150 if its in GREAT condition and has both the cylinders .22 and .22 magnum.
5-50 USD or so
Largest standard caliber is likely the S&W .500 Magnum, but revolvers HAVE been built in .600 Nitro Express.
L frame, blue steel revolver in 357 Magnum