I’ve had some discussions at the Gun Counter where I work, about the .40. Most of my Co-Workers are Die Hard .45 fans. And that’s fine. I’m a .45 fan myself. But the .40 is no slouch when comes to the Defensive Power Factor. The Defensive Power Factor gives some more insight into why I like the .40. Looking at the Winchester PDX1 loads to give a more even playing field… going heavy for caliber.
.40 PDX1 180 Grains at 968 FPS = DPF: 69.69.
.45 PDX1 230 Grains at 882 FPS = DPF: 91.2.
9mm PDX1 147 Grains at 954 FPS = DPF: 49.78.
Looking at the Defensive Power Factor, it shows the .45 is indeed the potent one. As we all knew. And the .40 falls in line where we thought. Now here’s the deal… the .45 advocates insist that the average defensive shooting is 2 rounds. 1.5 to be precise. So to them, the shorter round count is not a problem. Well, that’s not me. The US Army taught me to prepare for the worst, but hope for the best. So I’m going to pack more rounds when I have that option. I’m not planning on getting into a shooting. But I’m also not planning on firing twice and then stopping and then waiting to see what happens. I’m going to shoot to stop the threat. And that might mean giving them a whole magazine.
A typical .45 Mag with 8+1 rounds gives a .45 pistol a total DPF load of 820.8.
A typical .40 mag… Glock 22, 15+1, gives your .40 a total of 1115.04.
Typical 9mm Glock 17 magazine, 17+1 gives that 9mm a total of 896.04. That’s actually even better than the .45! I can see why the 9mm is popular with shooters… But even the vaunted “more shots in the magazine” argument kinda feels stale now.
These numbers paint a different picture in my mind. I am looking at these figures and I see that .40 is no longer just the Middle Man… but a jack of all trades, Multi-Role Fighter. This is one of the reasons the .40 enjoys so much popularity with Johnny Law. And with Ogres. You can keep your .45 Autos… and your 9mm’s. I’ll stick with my .40 calibers… thanks.