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What is the difference between a 380 and a 9mm?

Author

Noah Mitchell

Published Jan 19, 2026

380 ACP cartridges — both popular choices for self-defense rounds — have the same diameter, but a 9mm round is longer. The . 380 ACP round is cheaper and easier to handle and conceal, while the 9mm is more powerful overall.

Is a 9 mm and a 380 the same bullet?

380 auto and 9mm ammunition are all the same caliber. (Caliber is the size of the projectile, or bullet.) The different names are for marketing reasons or because of where the cartridge was developed.

Can you shoot 9mm in a .380 gun?

No, 9mm rounds cannot safely be chambered or fired from a gun designed for . 380. The 9mm round will likely not fit into the chamber, and even if it did, it will produce forces that the . 380 firearm was never designed to withstand and could break the firearm or even cause it to fail catastrophically.

Is 380 just a short 9mm?

380 is an American-made cartridge created in 1908 by John Moses Browning. It's also referred to as the 9mm Browning, the 9x17mm, and the 9mm short, all due to the fact that it has the same diameter as the 9x19mm Parabellum. But for easiness' sake, let's just stick with calling it . 380 ACP.

Is a .380 good for self defense?

Absolutely, the . 380 ACP is a fine round for self defense and highly underrated. Commonly known as the 9mm short, this round has virtually the same bullet diameter as the traditional 9mm bullet. And, while the muzzle velocity is slower than the 9mm, the .

34 related questions found

What's the best caliber for concealed carry?

For many the best caliber choice for concealed carry is the 9mm. This round has adequate stopping power with minimal recoil. Additionally, handguns chambered in 9mm are often easy to conceal.

Is .38 and .380 the same?

The main difference between 38 and 380 is that The 38 caliber has a bigger cartridge, but the bullet diameter is nearly the same. However, the carrying capacity is not the same. In most cases, a six-round revolver is used to load the 38. With certain weapons, the 380's may carry anywhere from 6 to 12 rounds.

What is the smallest hand gun?

NAA 22LR Mini Revolver

The smallest offering in this list, the North American Arms . 22LR Mini Revolver is true to name – mini! The wee wheelgun is only 4 inches long and 3.75 inches high, featuring a 1 1/8-inch barrel chambered in the beloved . 22LR.

What is smaller a .380 or a 22?

22 LR is a rimfire round, and 380 ACP is a centerfire cartridge. In addition to this, both the caliber (aka diameter of the bullet) of a 22 round and the size of the shell casing are significantly smaller than a 380 ACP round. A 22 LR case is just over 0.6 inches long, with a bullet diameter of 0.223 inches.

Is there a difference between .380 and .380 ACP?

When thinking about 380 ACP vs 380 Auto, the short answer is... there is no difference! There's only one . 380 cartridge, and it's .

What size bullet does a 380 take?

380 uses a . 355-in diameter bullet, just like 9x19mm. Bullet size is actually more universal than you'd think, incidentally; among rifle rounds, for instance, the 7mm-08 Remington, 7mm Remington Magnum, 7mm Shooting Times Westerner, . 280 Remington and 7mm Weatherby Magnum all use .

Are 9mm and 38 Special the same?

Both bullets are equal in bullet diameter, the 9mm case is about 3/8 of an inch shorter than the . 38 Special but boasts double the pressure.

Can you use 9mm bullets in a 38?

Accuracy wont be olympic level, but it works just fine. When loading 38 Special bullets (. 357 diameter) in a 9mm you just have to back off a few tenths of powder and they shoot just fine.

Is a 380 bigger than a 9 mm?

The 380 is a lot smaller than the 9mm, and you can see the difference right away. Consequently, the 380 is also known as the 9mm short. Amongst military pistols and semi-automatic rifles, 9mm cartridges are the most common and commonly used ammunition.

Is a 357 more powerful than a 9mm?

The 357 Magnum round loaded with a 125-grain projectile reaches almost 1,500 feet per second and strikes targets with 585 foot-pounds of energy. Needless to say, ballistically, it outperforms the 9mm. The 357 Magnum also has no problems reaching the FBI standards and even exceeding them.

What is the difference between .38 Special and .380 ACP?

380 Auto are commonly between 85 and 95 grains while . 38 Special bullets commonly weigh from 95 to 158 grains. However, some cartridge manufacturers offer lighter and heavier bullets for each.

What does .380 mean in guns?

The . 380 ACP (9×17mm) (Automatic Colt Pistol) is a rimless, straight-walled pistol cartridge developed by firearms designer John Moses Browning. The cartridge headspaces on the mouth of the case.

Is .380 a good caliber?

380 is still remarkably effective and a whole lot better than anything smaller. In fact, the difference between the . 380 and the . 40 S&W, to pick one at random, is less than the difference between the .

What is the lightest gun to carry?

S&W M&P BODYGUARD 380

Weighing just 12.3 ounces, the Bodyguard 380 is the lightest handgun on our list. Yet despite its weight, the Bodyguard 380 is still a powerful self-defense pistol when loaded with quality ammunition. The S&W Bodyguard 380 measures 5.3 inches overall, making it perfect for concealed carry.

What handgun has the least amount of kick?

Best Concealed Carry Guns With Little Recoil

  • The Ruger LC380 Semi-Auto Pistol is a concealed carry weapon engineered for success. ...
  • The Kel-Tec PMR-30 . ...
  • Rock Island Armory spent three years to create a unique low recoil handgun. ...
  • The Smith & Wesson Model 60 controls recoil while you control a lethal threat.

What is the smallest Glock?

Glock 42 Among The Best Compact .

The 42 is Glock's smallest pistol, and as a single-stack chambered for . 380 Auto, it has slimmer proportions than even the tiniest of the Baby Glock 9mm pistols.

What pistol do FBI agents carry?

So when the new agents come to us, the Firearms Training Unit, we train them on three specific types of weapons. Their primary weapon, their sidearm, is a Glock 19M; it's a brand new weapon—that's predominantly what we're going to teach them with.

Why do cops carry Glocks?

The Glock's large capacity and light body gave it advantages over other guns. "Police departments were amazed when they took their officers out to the range and found out not only could they learn to use the Glock pretty quickly, but the Glock also made them more accurate as marksmen," he says.

What does ACP mean in ammo?

45 ACP (Automatic Colt Pistol) or . 45 Auto (11.43×23mm) is a rimless straight-walled handgun cartridge designed by John Moses Browning in 1904, for use in his prototype Colt semi-automatic pistol.

What is the easiest pistol to conceal?

Lightest 9mm Handgun. Lightweight Concealed Carry Pistols For Easy Packing

  • Sig P365 - One of the lightest 9mm handguns. A lot of people would argue the Sig P365 is the perfect concealed carry pistol. ...
  • Glock 43. ...
  • Smith and Wesson Airweight. ...
  • Sig P938. ...
  • SCCY CPX-2.