Which is why cops end up emptying their Glocks in a shooting, and you get these crazy round counts. 17 rounds times five officers equals 85 shots fired.
I’ve heard that in a typical police firefight, something like 80% of all shots miss their target; out of that 17 rounds from your service pistol, you might get 3 on target.
I believe there’s even some Youtube videos of an officer and a suspect trading 30 rounds at a distance of 10 feet - and neither was hit.
High capacity firearms aren’t needed because a 9mm isn’t a sufficient caliber, it’s because most of your shots will completely miss - so you need a much higher capacity to begin with.