I was a cop for 20 years. My prefered duty weapon (and the one I carried)was my 4 inch S&W Model 28 in 357.
I used 150 gr cast LSWC (Lyman mold 358377) pushed by 14.5 grns of 2400.
Worked great and accurate.
Too old to be a cop now but if I was to do it again I'd want the same service revolver.
REAL COPS CARRY REVOLVERS