Caliber Wars II, the 9mm Strikes Back

Peter gets into the caliber wars. I was going to comment, but the comment got pretty long, so I decided to post. I happen to be an ED nurse and a paramedic and have seen more than a couple of gunshot wounds. This is my take: The more energy you dump into the target, the more effective each individual shot will be. At ranges of 10 to 50 feet, nothing is nastier than a shotgun. A load of large shot or a slug will flat out stop an attacker nearly every time.

Likewise, a rifle is king at ranges of 50 feet on out. Carbines are a great compromise. So is a skirmish rifle like the one I built a couple of years ago– especially since a .308 will punch through most body armor.

I once had a firearm instructor tell me:

If you know you will be in a gunfight, endeavor not to be there. The easiest gunfight to win is the one you don’t get into. Failing that, bring a long gun. In fact, bring friends with long guns.

Of course, no one never knows when they will be in a gunfight. That means we need to carry a gun all of the time, and carrying long guns is inconvenient, so we carry handguns as a compromise. That’s what handguns are- a compromise. The handgun on your hip is better than the shotgun or rifle in your closet.

It’s simple for me- in a perfect world, you should carry lots of really big, fast moving bullets. All handguns are poor at stopping an attacker. Still, in a full sized handgun, I would carry a large caliber, more powerful handgun over a smaller caliber.

  • My M&P9 holds 18 rounds of 9mm, delivering a 115 grain bullet at 1400 FPS, for a total of 500 foot pounds. A handgun in 357 sig is about the same power, but only holds 15 rounds.
  • An M&P45 holds 10 rounds, delivering 200 grains at about1000 fps and 500 foot pounds.
  • An M&P10 delivers 15 rounds of that 200 grain projectile, but at 1250 fps from a 4.6 inch barrel, meaning you are sending about 700 foot pounds of energy downrange.

Seeing this, you can see that a 10mm holding 15 rounds is a great handgun. Still, I wouldn’t feel undergunned with that M&P9. In fact, I have fullsized M&P’s in 9mm, .357Sig, .40S&W, .45ACP, and 10mm. I love the M&P platform, and any of those calibers would suit me fine.

The problem is that I live in Florida. It’s hot. It’s humid, and open carry it illegal. So as a result, people wear lightweight clothes that make it a challenge to carry full sized handguns, so you leave it at home. Like the rifle in your closet, the handgun in your dresser drawer isn’t doing you any good. As a result, we wind up carrying smaller, more compact handguns. When you start looking at compact handguns, the situation becomes more, shall we say, nuanced.

When it comes to concealing handguns in lightweight clothes, you lose a lot of the advantages of the larger bullets. Now large bullets are slowed down, capacity is reduced.

A subcompact .45 now gives you only get 6 rounds, and the shorter barrel means a slower bullet, perhaps as slow as 800 fps and only 280 foot pounds with a 200 gr bullet.

Similarly, you get the same performance out of .40S&W and out of 10mm with the shortened barrel of a subcompact, and you are now restricted to 8 rounds.

The .357Sig is now delivering 9mm like performance, but with an 8 round magazine.

Subcompacts are where 9mm begins to shine. The Shield Plus is now delivering 13 rounds and with its 3.1 inch barrel you are now sending 115 grain bullets downrange at 1250 fps, delivering 400 foot pounds of energy.

It’s a tradeoff. No handgun is perfect, and each caliber has its advantages and disadvantages. Look at what you are trying to accomplish in light of the restrictions that are being placed upon you by the tactical situation.

That is the reason why I own a lot of handguns, or at least that is how I justify it to myself. To make the manual of arms and shooting easier, I largely only carry one brand. In my case, I shoot the M&P line. You may decide to shoot other models. We all know how rabid fans of the Glock or the 1911 can be. I am not saying that people who shoot those are wrong. I am saying that those handguns are wrong for me. They may be right for you. At least let articles like this get you to think about what you are carrying. If that means you get to buy another gun, is that such a bad idea?


A word about revolvers- I own a few. My little 5 shot model 642 in .38 special gets carried more often than any other. Still, 38special from a 1.88 inch barrel isn’t a great performer. The length is about the same as a compact auto, but Again, compromise. I also have a 4 inch barreled revolver in .357Mag. I don’t carry it as a defensive handgun because, frankly I think revolvers are suboptimal for defensive use- capacity is too low, and reload times are too long.

Stupid Transplants

A woman is arrested after she holds two kids at gunpoint because they were fishing in the pond behind her house, saying: “If someone goes in your back yard, you can blow their fucking heads off.”

Of course she is wrong, but judging by the accent, this is another Yankee liberal who thinks that the south is filled with gun toting, ignorant rednecks who shoot everything that moves. It turns out that the kids were 15 and 13 year old brothers who were just fishing, and the boys weren’t even on her property. The ignorant Yankee? She was armed with a pellet gun. That still won’t protect this moron from the law- pointing a gun at someone while threatening to kill them is a felony- even if the gun isn’t loaded or real.

Even worse- she threatened to kill two kids for FISHING.

Stop New Yorking my Florida.

No One is Coming to Save You

The Supreme Court recently upheld a Biden era ATF rule that requires serial numbers, background checks and a dealer to transfer their “buy, build, shoot” kits- ruling that selling a kit that could readily be turned into a firearm is the same thing as actually selling a firearm. This decision is going to put Polymer80 out of business. You can read the actual decision here (pdf alert, hosted offsite). It’s a major defeat for liberty, and a bellwether of things to come from this court. The only two justices who dissented were Thomas and Alito. Now you know why the left wants Alito gone.

The decision for now is narrowly targeted at the Polymer80 kit, which came with the unfinished frame, the jig, and the tools needed to convert the parts into a firearm. The court’s majority specifically said that this applies only to parts sold as a complete kit, so for now 80% frames and receivers from makers like 80% Arms are completely legal, but you can expect that to be dealt with in later courts.

I have said for awhile that Trump’s best attribute was his SCOTUS picks. Now that it appears that those picks and Congress have again turned their backs on the 2A crowd (as Republicans always seem to do, once they have the pro-2A vote in their pocket), the only difference between the two parties is the speed with which we are headed off the cliff. No matter what Trump does, he can’t overcome the inertia of the uniparty.

You can read the informational post from 80% Arms here. The reason that 80% is getting away with this, is that they are not selling the jigs or tools needed to finish their lowers. They are continuing to sell 80% AR lowers and 76% Glock lowers, even though the Glock lowers are sold out.

As I have pointed out time and again on this blog, no one is coming to save you, and there is no voting your way out of this. We are too far down the path to totalitarianism. SCOTUS is not going to be a big friend to the gun community, and this Trump administration is a mere speed bump on the way to tyranny. At this point, we are looking at a pretty bleak future for the country. The median income in the US is just shy of $40,000 a year- but those who make less than $40k don’t pay any income taxes, once you factor in refundable tax credits. Those who make less than $25k don’t pay any taxes of any kind. Those who vote for a living are out voting those who work for a living. There is no coming back from that.

What that means is that the Democrats are promising free shit to the poor while simultaneously using those votes to slowly enact a tyranny. That’s why they want you disarmed. So here is my advice- do one of the following:

Buy a 3D printer. The left is already making it a felony to use a 3D printer to make firearms, and a misdemeanor to exchange the files needed to do so. They are also pressuring the makers of 3D printers to encode blocks on the printers making it impossible to make firearms or firearm parts. If you have a 3D printer, I would make sure that firmware or software updates don’t happen automatically, or you may find that your 3D printer gets neutered. You can find a guide for making your own receivers here.

Or you can buy a Ghost Gunner for about $2500 that will allow you to make AR receivers from plain aluminum blocks, as well as do all sorts of metalworking like cutting slides for red dot sights.

I am planning on buying one or the other this summer, once my current projects come to a conclusion. I am nearing completion of my 300 Blackout project. Once that is done, I will put a deposit on a Ghost Gunner 3 or buy a 3D printer.


The disclaimer: I don’t advertise, and receive nothing for my reviews or articles. I don’t think that I ever will. I have no relationship with any products, companies, or vendors that I review here, other than being a customer. If I ever *DO* have a financial interest, I will disclose it. Otherwise, I pay what you would pay. No discounts or other incentives here. I only post these things because I think that my readers would be interested.

Suppressors

The US Attorney’s office has just filed a brief stating that suppressors aren’t arms and are therefore not protected by the Second Amendment.

This is twisting the definitions, since 26 USC 5845 defines a firearm thusly:

The term “firearm” means (1) a shotgun having a barrel or barrels of less than 18 inches in length; (2) a weapon made from a shotgun if such weapon as modified has an overall length of less than 26 inches or a barrel or barrels of less than 18 inches in length; (3) a rifle having a barrel or barrels of less than 16 inches in length; (4) a weapon made from a rifle if such weapon as modified has an overall length of less than 26 inches or a barrel or barrels of less than 16 inches in length; (5) any other weapon, as defined in subsection (e); (6) a machinegun; (7) any silencer (as defined in section 921 of title 18, United States Code); and (8) a destructive device. 

Function Report

I took the M&P10 to the range today and put 210 rounds through it: 50 rounds of 180 grain FMJ, and 160 rounds of full power Underwood 180 grain XTP.

The Holosun worked great- it took 5 rounds to get it zeroed. After that, it held that zero with no issues. Recoil was snappy, but manageable, even with the full power loads. To me, it felt like firing my M&P45 with +P loads. I will admit that the checkering was chafing my shooting hand a bit by the end of the session. Still, I am able to put a 15 round magazine into the 10 ring (OK, I admit there were a pair of 9 flyers low in the 9 ring, indicating that I was anticipating recoil a bit) at ten yards in ten seconds.

The only issue that keeps me from calling it a defense gun is towards the end of the session, I had two failures to go completely into battery and two soft primer strikes. Examining the primer of the rounds showed that the primers had shallow dents. I put them back into the magazine and both fired. Maybe it is dirty burning ammo, maybe the weapon needs a good cleaning and lubrication, I don’t know. I just know that 4 failures to go bang in 210 rounds is not acceptable in a self defense pistol.

I spoke with my neighbor and we are going to go to a local outdoor range with a chrono and some gelatin blocks to see how well this ammo passes the FBI test. That probably won’t be for a month or two though. When we do that, I will run a couple hundred more rounds through it and see how it does.

For the last part of this post, I have to admit that I may have a problem. While I was leaving the range, I was looking at the suppressors. I cannot confirm or deny that a Dead Air Nomad may or may not have accidentally been added to my shopping cart. We will see how long an eForm 4 takes nowadays.

Gun Leather

I seem to go through this every time I buy a pistol that doesn’t fit any of my current holsters. I am very particular when it comes to holsters. Like most people who carry a firearm, I have dozens of holsters. Over the years, I have had:

  • Fanny packs
  • Inside the waistband
  • Outside the waistband
  • Ankle holsters
  • tuckable IWB
  • Thunderwear
  • Pocket Holsters
  • Appendix carry
  • Sneaky Pete
  • Man Purse (OK, shoulder bag)
  • and I am sure others that I can’t remember.

The holsters that I have generally fit guns in the following categories (Yes, nearly all of my carry guns are M&P, because it is easier to buy a holster that fits multiple handguns that way):

  • Large Auto: M&P45, M&P10
  • Midsized Auto: M&P9, M&P40
  • Compact Auto: M&P9c, Glock 19
  • Small Auto: Shield Plus
  • Minicompact: Shield9, Shield40, Shield 45
  • Micro Compact: Bodyguard 380, Beretta 3032
  • Small Revolver: Smith and Wesson 642

Over the years, I have developed a taste for what I like, and for what I don’t like.

For starters, I don’t like the feel of Kydex or other hard plastics against my skin. I find that the plastic finds a spot to dig in, which causes me to fiddle with the holster, moving it around to make it more comfortable. The more you fiddle with a concealed holster, the more obvious it is that you are carrying. That means I want a leather or hybrid holster. A good example of a hybrid holster is an MTAC.

I can and do have a couple of OWB holsters in nylon or Kydex. Leather isn’t as important for me when dealing with off-skin carry. Still, I don’t have a lot of open carry holsters because Florida law doesn’t allow for open carry.

I also don’t like holsters that attach with clips- plastic or metal. They don’t stay secure, and I find that on the draw, the holster tends to come out of your pants with the pistol. For that reason, I like leather straps or belt slots that are cut into the holster itself.

One of the problems that I had when I first began carrying pistols with microdots is there were not any commercial holsters made for them. I wound having to get a custom one from Milt Sparks. The disadvantage was that it took 10 weeks to get my holster. Now the wait for his work is over 40 weeks. That won’t do.

The good news is that there are now many more custom leathermakers who can provide holsters for guns with microdots. One of them is Wright Leatherworks. I like the Banshee, and at $155 for a microdot ready holster with a 10 week lead time is already causing me to think about getting one for the 10mm. Not because I will carry it a lot, but it will give me the option of carrying it if I want to.

The good news is that everything for the 10mm is finally in (except the 5 spare magazines), so a range trip is coming in the next week or two. I will do a function test, and I am planning on buying some ballistic gelatin in the near future. That will allow me to compare some of my carry options in the distant future.

Cost to Add Caliber

As an example for what it costs to add a new caliber:

  • Handgun: including tax, BG check, etc: $655.90
  • Optic: Free, it was a rebate
  • New Apex Trigger (I put an Apex on every M&P): $190
  • 5 more magazines: $213.24
  • 500 rounds of ammo: $626

Total cost to add a new caliber: $1,685.14

I figure it will cost more than three times that amount to add a 300 blackout with an integral suppressor to the stable. Man, shooting is expensive.

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

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

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.

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

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.

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

Reloading

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

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.

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.

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.

10mm Research

In my continuing research of 10mm defense loads: Let me start this post by pointing out that pistols are a compromise, in that they all suck for self defense. We carry them because it is easier and gets you fewer sideways looks than does carrying a long gun. Better the handgun on your hip than the firearm at home in the safe.

The current 10mm that I have is a full sized M&P10mm and I am unlikely to carry it. I find that I don’t even carry any of my full sized handguns on a regular basis. What I find myself carrying most often is a J frame .38 or a Shield Plus in 9mm. Still, buying and shooting guns is fun, so what the hell?

Even though I won’t carry it much, I always keep plenty of magazines and ammo on hand for every firearm. Five magazines for every pistol is the minimum I am comfortable with. For ammo, the minimum is 500 rounds for semi auto handguns, 100 rounds for revolvers, and 1000 rounds for semi-auto rifles of “war shots” that I like to keep on hand. That doesn’t count whatever range ammo that I have.

Of course I am going to research this, because it’s what I do. See the months of research I did before going with solar as a backup power system.

In looking at defensive ammo, the most important criteria is that it functions well in my firearm. It needs to go bang every time I intend it to. I will accept no more than one failure for every 500 rounds. (That’s why I no longer carry and have sold most of my 1911’s. They jam far too often. See this post here about the suckage that was my experiment with that platform.) Going along with that, the ammo must also be somewhat accurate for my handgun. That means passing a 5×5 test- I have to be able to put 5 rounds into a 5 inch circle at 5 yards in 5 seconds or less while drawing from a holster. I would rather hit with a .22 than miss with a .44.

The next criteria is that it has solid performance. There is no point in reinventing the wheel- I use the FBI criteria that states a bullet should penetrate between 12 and 18 inches of ballistic gelatin and a bullet that expands to at least 1.5 times its diameter. With handguns being poor performers, I want to maximize what performance I *do* get, so I try to only buy and stock ammo that meets this standard. I expected that my research will find more full power 10mm that goes beyond the 18 inches than falls short.

In 1983, Whit Collins, John Adams, Irving Stone, and Jeff Cooper worked with Norma AB to design the 10mm Automatic cartridge. Their goal was to create the a handgun cartridge that fired a heavier and larger caliber bullet than the 9mm Luger at a higher velocity and magazine capacity than the .45 ACP. This would create a handgun cartridge that combined the best of both platforms.

They did this by cutting a .30 Remington case down and loading it with .40 caliber bullets from the .38-40 Winchester. they not only achieved that objective but exceeded it by a healthy margin. The original 10mm Auto load shot a 200 grain projectile at 1,200 feet per second for 640 ft-lbs of muzzle energy, which was a significant step up in performance compared to the 9mm Luger and the .45 ACP. The new round nearly doubled the energy of the 9mm Parabellum and off the shelf .45 ACP ammunition.

Dornaus & Dixon Enterprises worked in parallel with Jeff Cooper and the rest of the 10mm Auto team to build a handgun designed specifically to shoot the new cartridge: the Bren Ten pistol. Similar in appearance to the CZ-75, Sonny Crockett in the television show Miami Vice helped make the Bren Ten famous. For this reason, demand for the pistol and the cartridge exploded in the mid-1980s. Unfortunately, the Bren Ten was rushed into production and the pistol’s reputation suffered due to early issues with reliability, quality control, and a shortage of magazines. The company was never quite able to regain its footing after those initial missteps and declared bankruptcy in 1986 after only making 1500 of the pistols. Shortly after the passing of the Bren Ten, Colt rolled out a Model 1911 modified to use the cartridge that they named the Delta Elite. 

Then came a fateful day in US law enforcement. The 10mm Auto piqued the interest of the FBI during their search for a more powerful service round in the aftermath of the disastrous 1986 shootout with two bank robbers in Miami.

The FBI liked the 10mm and originally wanted to switch to that platform, but the fact that they had a lot of limp wristed agents who were recoil sensitive, they wanted something with less recoil. The FBI test report on the cartridge was apparently labeled:

CAUTION: Velocities, pressures and recoil are extreme, vary greatly, and damage weapons with extended use. Control for multiple shots extremely difficult.

They downloaded the 10mm to reduce power by about 30% and issued a request for handgun makers to bid on a new cartridge/handgun combination for FBI use. This loading became known as the “10mm FBI load.” This load was several hundred feet per second slower than the original 10mm Auto, but the FBI was still satisfied with its penetration and terminal performance.  The winner of this competition would get a lucrative contract to supply most of US law enforcement.

Enter Smith and Wesson. They developed a cartridge that was shorter than the 10mm and met the FBI standard, and the .40 S&W was born. Derisively, it is said that S&W in this case stands for “Short and Weak.” Many of the advantages of the powerful 10mm cartridge disappeared with this downloaded cartridge. Instead of getting all of the combined advantages of the 9mm and .45ACP, you got none of them. That’s why the .40S&W has largely fallen out of favor- there is no advantage of having it.

To be completely honest, I own several .40S&W pistols, but I can’t remember the last time I carried or even shot one of them. Less capacity and slower bullets than a 9mm, lighter bullets than a .45ACP. What’s nice is that I can swap a barrel and change my S&W40 to .357Sig or 9mm.

I don’t want to simply buy 10mm ammo that is loaded to 40 caliber specs. If I wanted to do that, I would just carry one of my 40 calibers. I was looking for an ammo manufacturer that was loading ammo that really took advantage of the 10mm cartridge. After some searching, I like Underwood ammo as well as Fenix ammunition. Both of them are loading to the full 10mm capabilities. Buffalo Bore does as well, but their bullets are overpenetrating and seem better for large animals than for self defense.

Fenix makes one self defense loading for 10mm, and that is a 180 grain JHP moving along at 1250 feet per second, giving us a muzzle energy of 624 foot pounds. They are currently out of stock, so let’s look at our next contestant.

Underwood has quite a few loadings for 10mm. I selected the Tools & Targets YouTube channel because the guy clearly loves his 10mm and does a decent job in testing the bullets he looks at. The loadings that I am most interested in:

200 grain XTP moving along at 1250 feet per second with 694 ft/lb of energy. This round got 1100 fps out of that 4.6 inch barrel, delivering 537 ft/lb. The bullet penetrated 24 inches. That velocity isn’t great, but it’s the overpenetration that concerns me. Any energy that the bullet has when it leaves the backside of your target is wasted energy.

180 grain XTP at 1300 feet per second and 676 ft/lb. This channel saw the ammo come in right at 1242 fps for 616 ft/lb from a 4.6 inch barrel. He got a full 16 inches of penetration with the bullets retaining 150-179 grains of their mass, even though they expanded to more than .640 inches in diameter. Impressive performance.

155 grain XTP at 1500 feet per second and 775 ft/lb. The guy in this video found that it hit 1500 fps from a 4.6 inch barrel, just like the box claimed. That means it was right about 800 foot pounds of energy. The bullet gave 12.5″ to 13″ of penetration, with or without the clothing barrier.

135 grain JHP at 1600 feet per second and 768 ft/lb. The guy here got an average of about 1450 feet per second out of a 4.6 inch barrel. The wound cavity looks great, but it is only penetrating to 12.25″ and I just don’t see me wanting to use this one. I think the combination of slower than advertised speed along with the Nosler hollow point means suboptimal performance.

Overall, it looks like I will be selecting the Underwood 180 grain XTP for our initial reliability testing. I will order some, and once the reflex sight comes in, we will take a couple of hundred rounds to the range and see how it works. At $1.25 a round, it is actually cheaper than Gold Dots ($1.75) or Hornady Critical Duty ammo ($1.50). I just ordered 500 rounds for testing. If that round doesn’t work out, I will try the 155gr loading.

The disclaimer: I don’t advertise, and receive nothing for my reviews or articles. I have no relationship with any products, companies, or vendors that I review here, other than being a customer. If I ever *DO* have a financial interest, I will disclose it. Otherwise, I pay what you would pay. No discounts or other incentives here. I only post these things because I think that my readers would be interested.