Except ball ammo is not barrier-blind; ball ammo often exhibit serious jacket-core separation, and also tends to suffer deflection much more, particularly in the case of auto glass.
Federal HST, Ranger T147, Speer GD's and Hornady Critical Duty all do the job well.
Here's an article Dr Roberts wrote concerning 147-grain 9mm duty ammo: https://pistol-forum.com/showthread....y-load-testing
One on 5.56 duty loads: https://pistol-forum.com/showthread....-mm-Duty-Loads
Another for 12-gauge shotgun ammo: https://pistol-forum.com/showthread....or-LE-duty-use
This one is a deep dive into more duty handgun ammo choices: https://pistol-forum.com/showthread....f-Defense-Ammo
I strongly recommend to newcomers that they take some time to read those threads, buy quality stuff the Doctor recommends, then go practice. A lot.
Hope that helps.
Thanks guys. I’m leaning towards some Critical Duty 135gr, but I’m wondering how much difference the +P makes. I usually try to avoid +P stuff just because why use a 9mm if you’re gonnna juice it up to .40 levels.