You would be correct. My father retired BPD once showed me the small indoor practice range they used in the basement of their defunct police academy building. Interesting because 45 years after he was in the Academy, I was working in the adjacent building in the City of Boston Graphic Arts Department. He came to my building to visit and asked if the custodian had keys to the whole building, I said I think so, we got him to bring his old set of keys to the basement and on the fifth or sixth key the door opened and it was like going back in time. There were still a few empty shells on the floor some .38 and some .22lr and I asked him what was up with the .22? He said the city was too cheap to let us shoot the .38's all the time so we had dedicated .22lr versions of the the same revolvers that we carried.