Ya a .40 had a lot more power to it. Like I was telling them. Officers use a .40 y. Like your g23 and my g27 and g22. Note My g27 holds 9+1,My g22 15+1. Offices use the g22 for just that. More power and still have a mag with a lot ammunition in the mag. And your g23 I think I'm right 13+1. But the 9mm is still a power house pistol. But with all the testing 9mm come a little off of the power in to days world. Back in wwII they show are man shooting people with 9mm,And they would get back up and kill are boys. Japan and German had .45cal Or the 13mm.