You see a lot of .40 cal police trade-ins because departments are going back to the 9mm now that the FBI switched back. With today’s ammunition, stopping power isn’t an issue.
“With today’s ammunition, stopping power isn’t an issue.”
I take issue with your non-issue. A 9mm (or .380 Magnum as some of us like to refer to it) MUST expand to be effective. A .45 is already a .45 so any expansion is nice but not absolutely necessary.
Bingo. 9mm +P is more than competent.