Marshal Tom
Member
I tend to favor heavy for caliber so I go with the 147gr HST and carry it in my 9mm guns all the time. Many PD's seem to like it but almost any of the good quality HP ammo listed above is just fine and will do the job.
Find the latest version of Doc Roberts' list and pick one that you can get consistently and in quantities of 500+. Test it for function and the like in your platforms.
I had the experience with my 6946 shooting 115 and 124 grain loads hitting well below point of aim, but 147's hit point of aim at 25 yards.I've started carrying my 6906. 115 and 124 grain loads shoot about 4" low at 20 yards. 147 grain loads shoot almost to point of aim.
So now I have 147 grain Sig V-Crowns in it.
If something else shot to the sights I'd carry that.
From the informal testing, chronographing and research on this subject, my choice is Federal HST 124 grain standard velocity. That is what is in my P365. The Speer Gold Dot 124 grain is also very good, however I feel the HST has a slight edge.
+P's will give you greater velocity but my feeling is that the faster bullet will actually expand too fast and not penetrate as far. I am splitting hairs here because the two are not that far apart, but the standard velocity loads (at least as far as the HST is concerned) seems to have a slight edge in short barreled pistols.
Ammo Quest 9mm: Federal HST 124 grain tested in ballistic gelatin test review - YouTube