The FBI said that 9mm is just as good as .45 ACP, but we’re here to make the argument that sometimes bigger really is better.
Back when John Browning fine-tuned the .45 ACP (he didn’t invent it, but he did make it perfect), the premier arm of the military was the cavalry. Part of their job was stopping opposing cavalry—even if it meant stopping horses. (As horse lovers, that had to hurt.) That’s why the U.S. Army insisted on something .45 back then, when Roosevelt the First and Taft were presidents, and they would not accept the newfangled .30 and 9mm pistol cartridges that were gaining popularity in Europe.
Fast-forward a century, and the FBI kicks the .45 to the curb, as the 9mm is “as good as the .45” because of “bullet construction improvements.” Basically, they said the decision was made because they couldn’t see a difference.
I’ve said this before, but I’ll say it again: Once he got over the shock of smokeless powder and self-loading pistols, Sir Isaac Newton would have told the FBI to stuff it. Oh, he’d have been polite, and it would have been written in Latin (because all learned discourses back then were done in Latin), but he’d have given them a smackdown, because more is always more.
That the FBI cannot see it, or will not see it, matters not one whit to physics.
Now, I’m not as blinded by excess enough to say that .45 hardball is a 95 percent stopper (which was once the given, virtually dogma, in practical shooting circles a few decades ago), but it does better than 9mm ball.
“But with expanding bullets, the 9mm does it better.” Hmm, yes, perhaps … and perhaps not.
But if we’re going to compare, we have to compare like to like. Comparing .45 hardball to the latest expanding 9mm is, in the words of a long-gone radio broadcaster friend of mine, like “comparing apples to cinder blocks.”
Apples, Meet Oranges
A matched set of hollow-points in 9mm and .45 ACP? OK, the 9mm might expand to as much as the .45 starts out with, maybe even a bit more in perfect conditions. But the .45 is not going to shrink, and it will not be less than 0.451 inch in diameter. And any expansion that happens only makes the difference greater.
Keep in mind the word potential, because bullets are not guaranteed to expand. I have talked to a number of people in the various aspects of practical, tactical and law enforcement shooting, and the percentage of pistol bullets that fail to expand is almost depressing to consider. So, if expansion doesn’t happen, then we’re back to comparing 0.355 inch versus 0.451 inch as the baseline consideration.
The differences can be dramatic. There was a recent shooting in Dearborn Heights, a suburb that’s contiguous to Detroit (and all that entails). The homeowner realized there was an intruder, and when challenged, the intruder started shooting. So, the homeowner responded with gunfire. After a few seconds, everyone involved had been hit by projectiles, even the sleeping girlfriend. The girlfriend and the homeowner were treated at the hospital, while the intruder, hit in the leg by a single round of .45 hardball, required more care. He eventually had to have his leg amputated. And that was with .45 hardball, no expansion.
Not to be gruesome, but ballistic gelatin is a uniform and consistent media, and people are not. It’s just that we can test in ballistic gel in a consistent and safe and legal manner.
Good old hardball, a jacketed 230-grain round-nose has been the standard for over a century, and with good reason. It’s accurate enough, and it’s ultra-reliable. Most pistols fed most 230-grain hardball loads are going to be more accurate than the shooter is capable. However, if you really need an extra dollop of accuracy, then you can invest in some Hornady XTP loads. They are brilliantly accurate, and they expand.
Now, it’s a rare 1911 these days (and I think of the 1911 for reliability problems more as a historical thing than a current thing) that will balk at .230 jacketed round-nose. And, with the fierce competition in the marketplace these days, everyone makes a reliable pistol, so you aren’t “stuck” with hardball. However, if you want expansion, or at least the potential, then you can go with Gold Dot.
One reason you might want to go with a hollow-point bullet is when you are indoors. All handgun bullets penetrate too much on interior walls, but hollow-points penetrate less than hardball does. That’s worth a thought and some planning. When using a firearm indoors, Rule No. 4 (know your target, and what is behind it) really becomes important.
With prudence, and planning, you might find that using a .45 ACP means less of your house structure and furniture is cover for the intruder, and more of it’s merely concealment. This you have to actually think about, consider and plan for. Your builder will not be marking the parts of your house as “cover” and “concealment” for you.
While it seems the world is a 9mm place these days, you will have no lack of options for ammo and bullet design choices in the .45 ACP.
More is More. More is Better.
Now, Newton would also tell us that, while more is always more, it costs … one way or another. It costs in recoil and magazine capacity. You have to be willing to put up with the recoil of .45 in order to get the power of a .45-caliber projectile. That’s not a real problem, as there are a number of female competitors in the USPSA/IPSC circuit who are not tall nor heavy and find the recoil of a .45 ACP (or a near .45) pistol to be no big deal. If someone who stands at 5-foot-nothing and weighs 90 pounds can shoot a .45 accurately and quickly, what’s your problem? (Typically, it’s lack of practice. There, I said it.)
Capacity is another. A double-stack 9mm can still be very trim (the 9mm makers are getting down to “This holds how many?” sizes for pistols) and still be manageable. But a double-stack .45, even in the slimmest versions, is a big-hands gun. Remember that the single-stack 1911 pistol has been in continuous production since 1911 for a reason. It holds enough ammunition that you probably won’t need more, and if you do, the reloads are mighty quick.
Oh, and one more cost that I have to admit to: actual cost. As in, .45 ammunition of any kind costs more in dollars than 9mm does, if only because there is more material in it. A quick check shows 9mm 115-grain ball in un-reloadable steel cases at $200 per thousand rounds. Reloadable brass ammo runs $230 per thousand. Meanwhile, .45 ACP runs $390 per thousand in reloadable form. I’ll admit, that’s a bunch more.
Times, They Change
However, an extra bonus from the fierce competition in the .45 marketplace is that a durable, reliable, 1911-based or even 1911 pistol can be had for not much money. If you want extra features, then they don’t cost much, either.
An example is the Rock Island Rock Standard Full Size Cerakote .45 ACP. It has forward cocking serrations, Novak-style combat sights, a high-grip beavertail and ambidextrous thumb safety, all done up in a Cerakote finish. It comes with G10 grips checkered for a non-slip grip, lowered ejection port and commander hammer, and it’s built on a Series 70 frame. That means no firing pin blocking the safety plunger to potentially cause problems.
Built on a 4140 alloy steel parts set, the small parts are parkerized, it takes any and all 1911 single-stack magazines, it comes with an eight-round magazine, and it is listed at an affordable $759. Which means you can probably find it in the display case of your local gun shop for under $700.
The sights are dovetail-mounted so you can swap them if you really feel the need (or have a compulsion for home-gunsmithing). Everything on it is as close to mil-spec dimensionally as is possible these days. So, you can change things you might not like or find that they don’t fit you.
Try that with a polymer-framed pistol.
You Can Handle It
Oh, and back to the controllability question?
When the 1911 pistol was adopted, the average height of the American man was all of 5 feet, 8 inches. (Women were 5 feet, 3 inches.) Browning knew this (he could have hardly not known), so the 1911 is as ergonomic as he could make it for the average man of his time. Today, the average height of men is 2 inches greater, so stop complaining about grip size in 1911s.
Right out of the box, I found that the Rock Island Standard Full Size hit to the sights, it shot nice-sized groups, and it has yet to fail, despite being fed a wide variety of ammunition.
Back when I started shooting competitively (we will not discuss who was president then), just getting the sights, beavertail, custom grips and adjustable trigger—all details that the Rock Island pistol has on it—onto a box-stock 1911A1 would have run more than the cost of the Rock Island pistol. No, seriously.
Firing up the old inflation calculator, $759 in 2025 dollars equates to (darn, now I have to admit when I started this journey) $155 in 1978. I paid more than that for the first 1911A1 surplus pistol that I then handed over to a pistolsmith to have him upgrade it. And I paid more for the work than I had for that surplus pistol. Calculating forward, that first pistol ran me about $2,400 in 2025 dollars, and I still was using absolutely miserable magazines in it. That’s all we had back then.
That’s the other good thing about the .45 ACP and the 1911 these days: The current offerings of magazines are superb in function and durability. I can recommend—without hesitation—both Wilson and Chip McCormick magazines. And if eight rounds isn’t enough, you can get extended, 10-round magazines for your single-stack 1911.
So, power, style, class and more than a little retro vibe. What’s wrong with the .45 ACP? Nothing. And what’s wrong with using it in a 1911? Nothing at all.
There: FBI, take that.
Editor’s Note: This article originally appeared in the April 2025 issue of Gun Digest the Magazine.
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