Seriously, there's no need for giant, bolt red lettering.
You can't chamber a .357 cartridge in a .38 special chamber. The .357 case is too long to chamber completely, so you can't close the cylinder/action of the .38 special handgun with a .357 mag cartridge in it.
This was done intentionally to prevent such things from happening, since it would very likely blow up most handguns chambered for .38 special.
Daryl
You can't chamber a .357 cartridge in a .38 special chamber. The .357 case is too long to chamber completely, so you can't close the cylinder/action of the .38 special handgun with a .357 mag cartridge in it.
This was done intentionally to prevent such things from happening, since it would very likely blow up most handguns chambered for .38 special.
Daryl