From where I stand,
objectively, the .40 S&W's barrier performance is what it has most going for it.
Also
objectively, with the 9x19 as a baseline, I get closest to my scores on timed standards/tests with the .40 S&W only when, as
@HansGruber wrote above, I am shooting a full-sized pistol; the heavier the better, too.
As I drop to the "Compact" category -which is my Goldilocks spot for concealment- I find that I start to see noticeable differences in scored standards/tests: I either need to spend more time to chase the same score, or I drop score in the attempt to meet the par that I've set with 9x19.
I posted this before in another thread (
https://www.thearmorylife.com/forum/threads/does-the-cartridge-still-matter.10166/ ), but I'll post it again here as it is aligned to the current thread and still just as pertinent -
Noted terminal ballistics expert
DocGKR , as he posted on M4Carbine.net a few years back. Here, he recounts a conversation that he had with a true gunfighter -
DocGKR on M4Carbine.net said: said:
In a timely coincidence, a very experienced senior SOF NCO who has slayed many of our Nation's foes and who has the distinction of having used 9mm, .40, and .45 ACP pistols in combat during various phases of his career wrote the following superb analysis discussing this very topic recently:
Not getting into the weapons transition issues from frame design to frame design (it's the reason I love to hate the Glock), the fact of the matter is that the recoil on the 23 crosses the magic line of running the **** out of your pistol.
Allow me to explain...
Most of the guys on the G19 thread mentioned that they can handle the reduced size of the 19 and the recoil increase over the 17 is acceptable. Most of us have also determined that this does NOT cross over to the .40 cartridge. Guys with a firm handle on recoil manipulation can use the 22 and 35 with acceptable results. However when you go down to 26's and 23's, the juice is not worth the squeeze. The recoil is now noticably effecting times and it's measurable. If you can't effectively control recoil and are wasting time allowing your pistol to settle between shots then this is all a wash and means nothing to you, but if you can apply the fundamentals effectively you will quickly see that you can't run a sub compact 9 or a compact .40 worth a ****. So a decision to accept a larger pistol in order to have an acceptable recoil impulse based upon caliber must be made. The smallest 9mm Glock recoil that I will accept is the G19 and I will not go below the G22 when bumping up to .40.
Subjectively, I do feel that recoil is more harsh with the .40 S&W, when all other parameters are held the same (i.e. same platform). I believe that this is confirmed by the differences I observe in my performance on objective standards. Again by-perception, I think I am seeing more front sight lift (I've never filmed myself using ultra-slow-motion to see if this is objectively true, however), and this would logically align with both my perceptions of recoil characteristics as well as the objective differences in my shooting performance.
To me, subjectively, at the full-size level, if someone laid out a pair of what are otherwise "the same" handguns in front of me and told me that one is a 9x19 and the other a .40 S&W, I wouldn't mind blindly picking one and just rolling with it. I
feel that they are
almost the same.
But "a feeling is just that, is'n it?"
And "almost the same" isn't "exactly the same," is it? Objectively, I know -because I've measured it- that there will be a difference, in my hands.
---
Also subjectively, my favorite thing about the .40 S&W is that it is currently not very in-vogue with shooters.
I'm relatively new to shooting, having only really taken up the sport/hobby seriously in Q.3, 2011.
The timing of my entry into the shooting world meant that just as I was starting to really seek out training and was taking a bunch of classes and getting to the point where I started to be able to self-diagnose/correct in solo-practice, the ammo shortage of that particular period (c.2008-'16) also reached its peak. In very short order, I found that the only caliber I had owned at the time - 9x19 - to be completely depleted from not only store shelves, but also from online retailers...they just weren't able to be had, at
any price.
What remained on the shelves, at surprisingly reasonable costs (at least at the beginning of the peak run) was the then-falling-out-of-favor .40 S&W and the now "semi boutique" .357 SIG.
As with many novices/beginners, I had thought that by consolidating my cartridge selection that I'd be doing myself a favor, logistically.
That didn't work out so well in-reality.
When the opportunity arose for me to purchase a Glock 32 from a friend, I jumped on it, and now maintain a small stash of .357 SIG and .40 S&W.