They had transitioned to, I believe, S&W semi-autos by then but were still using some of the 65-2s during training. I seem to recall they still used the revolver for training because it was easier for them dryfire than the new semi-autos. When they issued the 65-2s they initially fired the .357s in them but quickly realized many of the officers couldn't qualify with them, I assume, because of the harsh recoil. It does have smooth, sweet double action trigger pull though. My father said that they used .38s in the 65-2 until his retirement. He didn't carry much on his duty belt back then. Revolver, cuffs, and night stick and little else. I'll have to verify that. I don't believe they even carried speed loaders for the revolver. I think they were using belt loops for the spare rounds. When they went to the semi-autos they did start carrying a spare magazine. The firearms training back then was minimal at best.
I don't know how an officer can stand upright with all of the stuff they carry today.