There isn't a .40 ACP - the cartridge you're thinking is the .40 S&W. Basically, it's a larger cartridge than the 9mm, being essentially a shortened version of the 10mm auto cartridge.
The 9mm Parabellum is longer than the .380 ACP (also called the 9mm Short) They do not interchange.
9mm= .355 45 ACP = .452
Depends. .380 ACP is used to refer to the 9x17 cartridge. It is not interchangeable for use in 9x18 (9mm Makarov), 9x19 (9mm Parabellum/Luger), or any other firearm designed for any cartridge other than the .380 ACP/9x17 cartridge.
The 380 ACP, also known as the 9mm Short, 9x17, 9mm Browning, 9mm Kurz and 9mm Corto uses a .355 diameter bullet. The 38 special uses a .357 diameter bullet. Additionally, the 380 ACP is designed for a semi-automatic and the .38 special is designed for a revolver.
9mm Short is another term for the .380 ACP cartridge.
Intratec CAT-9 is a 9mm Parabellum/Luger (9x19) semi auto pistol. Intratec CAT-380 was made in .380 ACP/9mm Kurz (9x17). Intratec went out of business in 2001
There is no difference. ACP stands for Automatic Colt Pistol.
Projectile diameter is the same. 9mm case length is longer.
380 ACP or 9mm short or 9mm corto
It is a .380 ACP caliber handgun produced by Colt Arms. It is a .380 ACP caliber handgun produced by Colt Arms.
Yes. .380 ACP is ONE of the full names for the cartridge- stands for Automatic Colt Pistol. You may also see it as 9mm Kurz, or 9mm Corto (means 9mm Short),
There is no such thing as a "9mm Beretta" cartridge. Beretta firearms were manufactured in 9x19mm (also known as 9mm Parabellum or 9mm Luger), 9x17 (also known as the .380 ACP), and some models are made in 9x21 IMI for countries which prohibit civilians from owning firearms chambered in military calibres. The cartridge appropriate for your Beretta 9mm should be marked on the frame and slide.