Least usefull caliber.

.25
it's not a .22 and it's not a .32

Sort of useless.

AFS

2.7mm Kolibri

-1 on the .25

.357SIG. Some people like it and I can't understand why. If you want that kind of performance get some Win Rangers 127gr +P+ 9mm.
But there are a host of forgotten pistol calibers out there. Who shoots .400 CorBon anymore? How about .41AE? When was the last gun chambered in .32S&W made?
I love 9mm and I love .45acp. I have no use for .40S&W which seems to offer the worst of both worlds.

37mm Flares

Like the ones for the fake M203's that you can put on AR's.

Might as well just let us have the 40mm M203 and sell training rounds commercially. That'd at least be kind of fun. But, seriously, who uses the 37mm flare guns as anything other than to look like they've got a 203 on their AR?

One more for the .25.

It's actually weaker than the .22. Besides, with the advent of the tiny .380s, the smaller rounds have been made obsolete.

It's actually weaker than the .22. Besides, with the advent of the tiny .380s, the smaller rounds have been made obsolete.

Click to expand...

I'm sure you're talking about personal defense. There are billions of squirrels, rabbits, possums, coons and other critters that wish the .22lr was obsolete.

I'm a huge fan of .45 ACP and use every available opportunity to disparage the wimpy 9mm whenever possible, but I will say that it is an effective round (not nearly as effective as .45) and provides several benefits such as cheaper purchase price (because it's wimpy?) and higher capacity in the firearms chambered for it (probably because you need twice the bullets)Lower recoil could be a benefit. So IMHO, I wouldn't classify the 9mm as useless.

I'd vote for .25 as well.......

.....although, you could use it for plinking aluminum cans. You wouldn't have to constantly go and set them upright again after you hit them. This wouldn't work with 9mm as it would most likely tip them over with hits near the rim.

50 Beowulf.

Unless you are trying to stop VBIEDs
on a daily basis.

First thought when I saw the title .25.
.22 or .22 magnum why need .25?

Whatever you carry.

Another vote for .25
I think it was Jeff Cooper who said:
"As we used to teach in the spook business, carry a 25 if it makes you feel good, but do not ever load it. If you load it you may shoot it. If you shoot it you may hit somebody, and if you hit somebody - and he finds out about it - he may be very angry with you."

Having been shot with a .25, I can vouch for its uselessness.

.25

Nobody has ever used .25 to do anything legal or good. How could a caliber which is a perfect square be so awful?

Gotta wonder how useful a .500 S&W really is. I mean useful, not cool or fun or whatever. I mean if a .44 magnum or a 45 colt, or 45 acp, or a 10mm won't do the job...don't you need a rifle or a shotgun?

I don't like to see any caliber become obsolete. I don't shoot every caliber and it just comes down to favorites or what you have now. Who am I to dictate choice.

With the popularity of concealable handguns, the 25 ACP has had a resurgence. Personally I find the caliber next to useless. I would choose the 380 myself over it. All you really have to do is look at what Walmart stocks and you see the more popular calibers.

As far as handguns are concerned, I'm quite comfortable with the 40 S&W and 38spl for overall personal defense. No 45 ACP? Nope. The caliber never really excited me as my formative years were primarily with revolvers and the 357 outshined it.

Added: My expectation is that the 500 S&W will live on and the 460 will become a boutique caliber with it's fans such as we see with the 41 magnum.

.25
anything larger than .50

Any caliber other than the one for the gun I have when I'm "engaged" and running out of ammo

any round that can take someone down is not useless.

Ever shoot 9 MAJOR?

A pistol built to handle a 9mm major load is quite fun. REALLY fast and flat shooting with little muzzle flip. You might think differently about 9's if you tried one. Might be hard to find though outside the IPSC community.

17 HMR - another hype gun built to sell a product which didn't need inventing.

7.62 Nagant I got a box for my Russian N1895r just to have a box of correct ammo Will probably never use it.

Another one for .25 ACP.

Rimfire performance at centerfire prices.

any round that can take someone down is not useless.

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A .25 can take a man down, but it'll take about 30 seconds to a minute with a really good COM shot. A guy can do a lot in that amount of time. Especially if he's pissed off that you shot him. So just because it will eventually take him down does not mean it is useful.