Dick in Comments

A commenter comes here to the blog and manages to hit every single gun blog cliche in a single comment. His comments in red. Let’s take a look:

Glock Fanboi

Congrats on getting a 10mm, tho I would have gone with a Glock given it is the most proven of all the 10mm pistols with over 30 years of production.

The brand wars. The two most insufferable fanbois are the Glock and the HK aficionados. We all tend to be loyal to a brand, whether that brand is Glock, Beretta, HK, or Smith and Wesson. Most of that is a matter of opinion and I happen to own or have owned most of the major handgun brands. As far as the striker fired pistols go, I prefer the 18 degree grip angle of my Smith and Wesson over the 22 degree grip angle of the Glock. Your own mileage may vary.

However, a bone to pick with the statement above is that Glock produced its first 10mm 35 years ago in 1990, the same year that Smith and Wesson produced the 1006. As noted in the article, Colt is the manufacturer that has produced the 10mm the longest.

Refighting the Caliber Wars

I will say that .40 is not useless or does nothing better than 9 or .45, I’ve done research and one thing I think .40 does better than 9 is expand more reliably with just about any ammo as the .40 was designed for hollow points while the 9 was made for FMJ 80 years earlier and the cavities for the 9mm bullets are often small and can have issues expanding while making the cavity too big would shorten the OAL and cause feed issues.

The initial bullets for the 10mm (which are the same bullets that the .40 fires) were poor performers because they tended to overpenetrate. This was solved in the .40 because the bullets were a couple of hundred fps slower. That had nothing to do with bullet design, but was a function of the FBI agents being limp-wristed and sensitive to recoil.

The 9mm used to have a problem with expansion, but modern bullet design has largely solved that issue through the use of multiple means, including things like bonded lead cores, polymer-filled cavities, and specialized jacket designs, allowing for better stopping power while minimizing over-penetration. Other interesting design improvements include bonded designs or the all-copper hollow points. The coolest bullet designs I have seen yet are the monolithic designs that expand by using fluid dynamics of bullet shape to cause expansion. Bullet design has come a long way in the past 40 years. The most recent are bullets made from a blend of metal (for mass) and polymer to control expansion, called impact expansion. Arguments about what caliber bullet expands better are largely pointless at this time.

All handguns, as noted in the previous post, are sacrifices. We sacrifice effectiveness for convenience in carrying. Still, the majority of handgun rounds are so close to each other in performance that there isn’t a practical difference, thanks to modern bullet design.

.45 Auto is low capacity and expensive ammo in comparison to .40 and the pistols larger, yet the caliber isn’t much more powerful.

Now we mix reasons. If cost is a factor, 9mm is cheaper. Most handgun loads are in the same ballpark for power. For example, there are 9mm loads that come in at 500 ft/lb, which puts them in the same area as .40S&W.

I have a .45 that holds 14+1, a .40 that holds 15+1, another that holds 7+1, and a 9mm that holds 17+1, with another that holds 8+1. Capacity is function of model, size (full, compact, mini, micro), and caliber.

Brand loyalty again, this time for ammo

10mm, the key is stay away from Federal ammo because they load it weak and I suspect what they do is they use the same powder charge as they do .40 to save time during setup. Usually the foriegn companies like Fiocchi or S&B will load their 10mm warmer, but not as hot as the boutique companies.

In 10mm, there are not many companies that load 10mm to full power. The reason is simple: 10mm is still a niche cartridge, and the market for it is too small to offer a large variety. The makers of ammo are simply making what sells, and what sells is ammo that isn’t producing lots of recoil. The smaller ammo companies are tapping into the small market that wants the power and doesn’t care about recoil. It’s simply a matter of marketing and sales.

10mm defense ammo has an issue of the bullets are largely built around .40 velocities, so some companies will load it close to the same so as to not drive the bullets so fast they overexpander and fail to penetrate. The JHP I’ve seen perform the best in 10mm are the 200gr because they are built for 10mm velocities.

This is largely balderdash, and we have already addressed bullet design.

Reloading

I got into 10mm because I could load it to its full potential at a fraction of what Underwood or Buffalo Bore would charge me.

Perhaps you can, but reloading doesn’t make economic sense, especially if you are taking the value of your time into account. I have skewered this sacred cow before.

Danger

Nice thing about 10mm Glocks is you can shoot .40 from without issues. IDK if the M&P can do that too, but it would be good to know and test to make sure in the event you need to.

No, no, no. You shouldn’t shoot .40 ammo in a 10mm pistol. It isn’t good for your pistol to do so, just as it isn’t good to fire .380 through a 9mm. Recommending that you do so indicates to me a lack of knowledge about firearms. I know that there are a lot of people who do, but that doesn’t mean that they are right, nor does it mean that it is a good idea.

Revolvers can do this like .44 Special through a .44 Magnum, or .38Spl in a .357Mag because of the difference in how those two platforms (revolver vs. auto) set their headspace. A revolver sets headspace by indexing on the rim of the cartridge. An autoloader that fires a straight walled case sets that space by the bullet seating in the barrel.

The 10mm case is 0.992 inches long. The .40S&W is 0.850 inches long. Since the headspace is longer for a 10mm, firing a .40S&W in it causes gas pressure and leakage to prematurely wear out your barrel and also damage your rifling. Additionally, it causes damage to your extractor.

If you want to do this, buy a .40 caliber barrel for your 10mm.

The 10mm is not a conceal carry gun, this is a duty caliber/open carry/home defense/go to war cartridge. Not every handgun needs to be a conceal carry piece and you know what? Not every carry gun has to be an autoloader.

I live in Florida. Open carry is not an option here. I am not a cop, so duty carry isn’t a thing. If I am going to war, I sure won’t be reliant on a handgun. For home defense, I have a bedside handgun, but it is only there to buy me time to get to the long guns in the closet. There is an AR, a shotgun, and a PDC in the closet for home defense.

Also, I have revolvers as well, so I am well aware that you can carry a revolver. As you note, I have a J frame just for that purpose.

Since you brought up the .38 J frame, start researching .32 H&R or .327 Federal revolvers for lower recoil and 6 instead of 5.

If you compare the muzzle velocity of a 38 and a 32 out of the same length barrel, you get the same- about 850 fps, with the chief difference between the two being a 38 bullet that is about 50% heavier. If I want to carry something with a longer barrel, then I would simply go with an autoloader or a .357magum. I am not recoil sensitive enough to need a low recoil handgun.

I don’t pretend to be an expert, and most of the posts that you see on guns are largely a matter of opinion, including my own. I am not sure whether my opinions are more knowledgeable than anyone else, but I have owned literally hundreds of firearms over my lifetime, and still own more than the ATF knows about. Call it dozens. I have more ammo in the house than the local police or fire department would be comfortable with. I still own the first firearm that I ever owned- a Winchester Model 250 (it’s a .22LR lever action with a tube feed). I have owned that gun since I was 8 years old. I also have my great grandfather’s shotgun that is over 100 years old.

Even with all of that, just when I get to thinking that I own a lot, along comes someone else to show me that I don’t know or have as much as I think I do. My neighbor has more firearms than I do, and one of my coworkers knows more about loading ammo and shooting out to 1200 yards than I ever will. So I don’t pretend to be an expert, just an aging man with a long list of opinions.

Thanks for the opportunity to get another post out.