I just bought a S&W revolver which was sold to me as a Regulation Police model. It has .38 writen at the side of the barrel just below the "Regulation Police" letters. Guess what happened when i wento the range to test it: .38 special rounds did not fit into the wheel when i went back to the store the guy who sold it to me had no idea of what happened and told me to come back tomorrow to register it as a .32. Can someone please throw a little light of what is going on??????