The best feature of the .40 Smith and Wesson today might be its falling popularity. That means quality handguns and ammunition are available now when other calibers aren’t. After the FBI’s adoption of the 9mm, the .40 has lost favor with law enforcement agencies, but it is still around and remains a very good self-defense cartridge.
The .40 S&W, also called .40 caliber, was a popular caliber for law enforcement duty pistols for 20 years. This means that police trade-ins are available providing lightly used quality at affordable prices. Less popular than 9mm, there is still a wide selection of .40 S&W ammunition for training and personal defense when other calibers are sold out. Despite conventional wisdom, gun buyers, new and old should consider the .40 S&W.
The .40 has more energy but the same sized pistol in 9mm will hold more rounds since the cartridge is smaller. A pistol chambered in .40 S&W holds more rounds than a.45, but the energy of the .45 ACP is higher than the .40.
It is useful to look back and see why the .40 was so popular for so many years. This is not another caliber debate. Do your homework and your range work before picking a handgun caliber. When you do pick one, remember, it is rude to talk about politics, religion, or handgun caliber at the supper table.
All around the internet, .40 S&W ammo is available in dozens of different loads. I didn’t find any .40-caliber ammunition at my local box stores, but I did find several cases at my local gun shop. It was priced slightly higher than what is available from online retailers, but there are no added shipping fees and I walked out of the store with it.
The .40 S&W was specifically developed to duplicate the performance of the FBI’s reduced-velocity 10mm cartridge and fit into medium-frame (9mm size) automatic handguns.
Since the 1900s, the .38, .45, and 9mm had been the main cartridges for law enforcement and the military in the United States. In the early 1970’s Whit Collins had a better idea. He wanted to rechamber the 9mm Browning Hi-Power in a more powerful cartridge.
Collins originally considered the .38 Super, but read Jeff Cooper’s concept of an ideal cartridge of a .40 caliber bullet weighing 200gr moving at 1,000fps. After much study of geometry Collins began looking for existing rifle cases that had the right dimensions and could be trimmed to proper length a Browning Hi-Power magazine.
Cooper approved and helped Collins get his idea to Guns & Ammo. By 1972 a Browning Hi-Power chambered in .40 G&A was test-fired. The loads being fired consisted of a 180gn bullet at 1,050fps out of the 5″ barrel.
In 1973 Cooper and Collins explored the idea of a longer cased .40 caliber round developed for large frame .45 platforms. Whit Collins continued working on his .40 G&A and Jeff Cooper began work on his .40 Super. In 1978 Cooper helped conceive the Bren Ten semiautomatic pistol, and his .40 Super evolved into 10mm Auto. Bren didn’t last long, but the 10mm would be re-born.
The true genesis of the .40 S&W was on April 11, 1986, in Miami Dade county Florida. Eight FBI agents and two bank robbers engaged in a fight to the death. FBI Special Agents Jerry L. Dove and Benjamin P. Grogan were killed, while five other agents were wounded.
The two robbery suspects, both with military experience, William Russell Matix and Michael Lee Platt, were also killed. These were bad men armed with an S&W M3000 12-gauge shotgun and a Ruger Mini-14. They had decided they were not going to be taken alive.
The incident has been intensely studied by the FBI and other law enforcement agencies. Despite outnumbering the suspects 4 to 1, the agents found themselves pinned down by rifle fire and unable to respond effectively. Although both Matix and Platt were hit multiple times during the firefight, Platt fought on and continued to injure and kill agents.
The subsequent FBI investigation blamed the failure on the poor stopping power of their .38 and 9mm handguns. They started the process of testing 9mm and .45 ACP ammunition seeking to replace the 3″ barrel Smith and Wesson Model 13 with a semi-automatic pistol. The semi-automatic pistol offered increased ammunition capacity and was easier to reload during a gunfight.
The FBI was satisfied with the performance of its .38 Special +P 158 gr cartridge. Ammunition for the new semi-automatic pistol had to deliver terminal performance equal or superior to the .38 Special FBI Load. The FBI developed a new series of practically oriented tests involving eight test events that reasonably represented the kinds of situations that FBI agents commonly encounter in shooting incidents.
The FBI ultimately selected a downloaded 10mm using a 180-grain jacketed hollow-point bullet fired at 950 fps. Even downloaded, this was a very hot load, unsuitable for the average agent.
It proved to be an excellent ballistic combination, although the long case was a problem. The 10mm round required a large-frame pistol. At that time, there were only two manufacturers making large frames, S&W and Colt.
The FBI contacted Smith & Wesson and requested they design a handgun to FBI specifications, based on the existing large-frame S&W Model 4506 .45 ACP handgun, that would reliably function with the FBI’s reduced velocity 10mm ammunition. This became the Smith & Wesson 1076, chambered for the 10mm Auto round and it was chosen by the FBI.
During this collaboration, Smith & Wesson’s smart guys soon realized that downloading the 10mm to meet the FBI specifications meant less powder and more airspace in the case. They found that by removing the airspace they could shorten the 10 mm case enough to fit within their medium-frame 9mm handguns.
Working in a secret joint project with Winchester Ammunition they developed a cartridge with identical ballistics to become known as the .40 S&W. When loaded with a 180 gr bullet, it produced the same ballistic performance as the FBI’s reduced velocity 10mm cartridge.
Ironically, the Glock 22 and Glock 23 pistols chambered in .40 S&W were announced a week before the 4006 and beat Smith & Wesson to the market in 1990, with the S&W cartridge. Clever marketing has S&W in the very name of the round. The new guns and ammunition were an immediate success.
Other than a .142″ reduction in overall case length, resulting in less powder capacity in the .40 S&W; the 10mm and .40 S&W are identical in projectile diameter, both using a 0.400″ caliber bullet. The .40 uses a small pistol primer whereas the 10mm cartridge uses a large pistol primer.
The 40 S&W, has nearly identical accuracy with the 9mm but it has an energy advantage over the 9mm and more manageable recoil than the 10 mm Auto cartridge. The .40 S&W and the 9 mm Parabellum both operate at a 35,000 psi (240 MPa) SAAMI maximum, compared to a 21,000 psi (150 MPa) maximum for .45 ACP.
There are a number of quality .40 caliber handguns available on GunsAmerica, you may have to search, but you can find your gun with a little patience.
The .40 S&W became more popular than the 10mm due to the ability to chamber the shorter cartridge in standard frame automatic pistols designed initially for the 9 mm Parabellum. The problem here is that pistols designed for the 9mm are damaged by the high pressures and high energy of the .40 accelerating wear. Many shooters experience increased felt recoil often described as muzzle flip.
The .40 has been there for a generation of cops. It was conceived by none other than Jeff Cooper himself and developed with some careful science. With improvements in 21st-century ammo, it is even better. While .40 S&W’s recoil and magazine capacity can be challenging, shooters will find that this is a small price to pay for availability and performance. Today might be the best time to buy one.
IMHO . . nothing can beat the simple ugly generic G23 in terms of utility and adaptability. I can shoot 3 calibers out of mine via the 19mm and 357sig conversion barrels. Storm Lake or KKM precision, both excellent.
Reloaders gain an additional benefit from .40 S&W. In factory loadings, the .45 ACP has more energy than the .40, but with the right powders like Hodgdon’s Longshot or 800-X, that’s not necessarily true. Both of those powders can push 180 grain bullets out of a .40 S&W a good 100-200 fps faster (1150-1200 fps) from a 4″ barrel than a 4″ barrel .45 ACP can push a 185 grain bullet (950-1050 fps). A 180 grain .40 cal bullet has the same sectional density as a 230 grain .45 cal. When you get to compare 200 grain bullets, the .40 can be loaded as fast as a hot .45 ACP +P (~950 fps). All of this is without exceeding published load data and staying within SAAMI pressure specs. So it is entirely possible for the .40 to beat the .45 in capacity AND energy.
Using properly configured handguns with fully supported chambers, people have experimented with loading beyond published data and posted their results online in various forums and videos. In their tests, the .40 can even be safely loaded hot enough to reach mid-range (but not hot) 10mm velocities in all bullet weights.
Of course none of that is to denigrate the .45 ACP either. The .45 starts out bigger and can expand to a larger diameter. It’s just to say that the mantra of the .40 being stuck in the middle of 9mm and .45 isn’t necessarily true. The .40 is capable of more than factory loadings give it credit for.
I bought a Taurus PT100 in .40 S&W when they first arrived and I like it.
I never left the .40, Back when it first came out, I found it better for me in my IPSC days compared to the 9 for falling those steel plates, and I never went back to the 9.
But I never followed the L.E. and Military trends anyway, so……………..
Don’t even get me started on the Berretta Mil Spec 9, I hated that gun.
this article was done in jan 2021 and yet it is just now being put out through GAD in my email???? nothing like getting reviews on-time……
Clearly your on this wealthier than poor side of things! For us normal people who don’t have a bunch of extra money to throw at let’s be honest if you’ve been shooting at all since Covid the ammo is junk unless your buying way over priced premium self defense ammo and even some of those are iffy these days. Ordered some American Qualoty Ammo bulk rate range ammo(cheap priced at the time!)and can tell by eye the supposedly copper jacket was made up of maybe 10-30% copper and the rest I have no clue. The projectile is a very slight copperish bare steel looking round. Before Covid the ammo was never top end they’d for sure, but was sufficient enough to hit the range. Not sure where you see boxes of .40S&W online that are remotely close to real world prices since the rest of us can’t find any round near not pre Covid prices but just fair prices under these BS conditions is what I really mean! I simply buy premium self defense ammo and if you do as I do and spend hours searching so many sites you can find top notch name brand precision self defense rounds for cents more than a who knows what the projectiles are truly made and if they’re not reloads which I forgot to mention AQA also used in the batches of bulk ammo in three different calibers(9mm, .40, and 10mm)that for sure all were reloaded cases. 9mm is the way to go with new rounds being so effective it’s better to have the extra rounds you get using 9mm instead of any of the bigger rounds.
How can I purchase some 40 Cal ammo, 248 730-2597 Thanks.
how many boxes do ya want??
I love my G27 gen4 for daily carry , it’s accurate and the .40 is a great hard hitting round. Now if I can find a reliable outlet for buying more ammo it would make my day.
The .40 is just about the perfect round. I have had Sig. and Glock duty pistols in this caliber for years. I have used it in PPC matches, bullseye, steel challenge and other matches. It works best with a 165 grain bullet weight.
I think the 40SW is a great cartridge. I have loaded thousands of 155 grain Montana Gold bullets in them. I think the 155-165 grain bullets work best in them.
After carrying a .38 Special 5 shot Snub Nose as a CCW holder for over 22 years, a Sheriff who was a personal friend of mine suggested he could get me an upgrade through the department. This was shortly after the .40 S&W made its debut, and I started carrying a S&W 411. I carried that 10 years and replaced it with a Springfield Armory XD-M .40 S&W, replacing that with my current Sig Sauer P320C in .40 S&W a year before the military selected the P320 9mm as their standard M17. I have never carried a 9mm because law enforcement at the time was unimpressed with its performance, and I don’t mind the sharper recoil. I have always been happy with the performance, variety and availability of the .40S&W ammo.
Now the availability of ammunition is a definite plus.
Very good information. I just bought some .40 Smith&Wesson and you’re post made me happy to realize I made a good decision. thank you very much
Good article. My foray into 10mm short came in 1991. I purchased an HK P7M10. They weren’t very popular (price?). I liked the safety of the “squeeze cocker”. The slide is/was very heavy. It accompanied me as my truck gun for years. Now it is a museum piece in the safe.
I am a retired law enforcement officer who was fortunate to carry a 1076 during part of my career. I shot it more accurately than the .40 S&W double stack Auto that replaced it, the slimmer 1076 grip fit my hand better.
I am still a 1076 owner and fan.
I own a .40, take it from us 40 owners don’t buy one definitely don’t by any ammo it’s all bad bad I say, just kidding but save us some! Pretty much why I bought mine years ago, 9mm was cheaper but none on the shelves or find so I figured what sense would it to be to buy a gun and have no ammo!!!
Hell, one would need to work a second job to buy ammo now days.
I was told that because of covid the lead mines in South America are almost shut down – If that makes any sense to you then that’s why there are no bullets!
Would be nice if 40 cal bullets were available.
Ammunition prices and availability change constantly. You have you check regularly. Ammo deals quickly come and go.
I haven’t seen a deal on ammo in about a year.
Actually I have enough ammo & reloading stuff to keep shooting & have been, but, I pulled out the 40s, cause I have a ton of loaded up 40s I never shoot, since when I shoot a “4” it’s a .45. So, been doing my combat practice with 40s. We forget it’s a good round, maybe better than a 9, but mine are all TSWs or full size steel & when carrying a pocket gun its a 9 or 38/357 AW, or if big a .45. I think that re-thinking a 40 might be a good idea for some people. FWIW
So why do we have and ammo shortage right now.Who is buying up all of the ammunition.
There are several layers of reasons why we are in an “ammo drought”, but 2 stand out:
1. We just went through a presidential election. EVERYONE wants to horde ammo guns and ammo.
2. Covid restrictions have decreased the amount of ammo that can be produced in a given factory, because of “social distancing”, and even lock downs in some areas. There are fewer people on an assembly line, therefore there is less ammo being produced. This doesn’t just apply to ammo, it’s everything. Covid is bad for the economy, and freedom in general.
I saw a thing with Pres of Hornady & he said they have produced 30% more than 2019 in 2020 & the other makers are doing similarly. Said the demand is extraordinary, more than any other shortage. They are months behind & suffering from shortage of components, just like us.
7 million new gun owners hitting the market, buying on average 2 boxes of ammo, equals 14 million boxes of ammo sold! Everybody is now prepping for the Biden utopia, so it will continue.
Everybody has been down on the .40, but the qualities that made it so popular 25 years ago are still there today. Yes, bullet technology has made the 9mm more effective, but it has also benefitted the .40 in the same manner. Whether now or 15 years into the future, the .40 will come back in popularity.