Switching To Semi-Auto

In 1989 my Department transitioned to 9mm Berettas. Times were changing; the bad guys were carrying high-capacity semi-autos, so we needed to do the same, to match firepower, right?

Were we better off with 9mm semi-autos than our old wheelguns? If allowed to carry magnum ammunition instead of the issued .38 Special 158-gr. +P SWHP “FBI load” I’m sure a lot of savvy sixgunners would have happily carried .357-loaded revolvers. Around 1996 we transitioned to .40 S&W GLOCKs.