Jake, I wasn't saying practice with your usual carry ammo. I was saying find ammo that is SIMILAR in bullet grain and powder load that will shoot with or very near your regular carry ammo. I'm assuming your main practice distance is around 10-15 yards correct? Muscle memory, as I said earlier, is a very key component to practicing for self defense. Practicing with something that hits/targets, and FEELS way different than your regular carry ammo is the same as practicing with a 600 grain arrow with a Traditional rig and then going hunting with a 500 grain. Just not smart. Your muscle memory will kick in under stress and you will be shooting horribly if you have practiced with something a lot different. Bad practice is actually worse than no practice!
So what is it you carry on duty? Given that info, I'm sure one of us will be able to find something similar in bullet grain and load so that you won't be practicing bad!