The better 9mm loads are within 100fps of what 357 mag revolvers are ACTUALLY getting from 4" barrels, sometimes much closer. Forget published ballistics. The only real market for revolvers now is long barreled big bores for hunting.
Old cops struggle with new guns when they have used something else their whole lives. I have several friends my age who cussed the new Glocks they were issued 15 years ago. (They had been previously able to carry anything they could qualify with). But the rookies who did not have to re-learn a new system started off outshooting the old pro's and now the old guys would fight you for the Glocks and wouldn't dream of going back.
Old cops struggle with new guns when they have used something else their whole lives. I have several friends my age who cussed the new Glocks they were issued 15 years ago. (They had been previously able to carry anything they could qualify with). But the rookies who did not have to re-learn a new system started off outshooting the old pro's and now the old guys would fight you for the Glocks and wouldn't dream of going back.