Assuming you're referring to the 9x19mm (also known as the 9mm Parabellum or 9mm Luger) and the .380 ACP (also known as the 9x17mm, 9mm Short, and 9mm Kurz), the answer is no on both counts, and it would be extremely dangerous to try this.
380 and 9mm projectiles are .355 in diameter _________________________ Most of the time, when people use the term 9mm, they are referring to a 9mm parabellum. A 9mm parabellum cannot be fired from a .380. The 9mm cartridge is longer. _________________________ The BULLET is the part of the cartridge that is the projectile. While 9mm parabellum and .380 ACP use the same diameter bullets, the CARTRIDGES are not interchangeable.
It depends on what you mean. 380 is the same as 9x17, but if you mean standard 9mm, that is 9x19. It's too long and too high pressure to use in a .380.
Usually not. The 9mm Parabellum catridge is longer than the .380, as a result, a 9mm magazine is also bigger, and the magazine will not fit in the .380 magazine well.
You can only use .380 ACP ammo in a .380 pistol. Period.
It depends on what you mean. 380 is the same as 9x17, but if you mean standard 9mm, that is 9x19. It's too long and too high pressure to use in a .380.
9mm and 380 both use bullets with a diameter of .355. However, the cases are a different size. .380 is also known as .380 auto, 9mm Kurtz, 9mm Corto, 9mm short or 9x17. 9mm typically refers to 9x19mm also known as 9mm Parabellum or 9mm Luger. You cannot fire a 9mm Parabellum cartridge from a .380 handgun. The 9mm cartridge will not fit into the chamber of the gun. However, if you were to pull the bullet out of the .380 case and put it into a 9mm Para case the resulting cartridge will work just fine.
380 and 9mm ammunition IS NOT INTERCHANGEABLE.
.380 ACP is simply another name for the 9x17 cartridge, also known as the 9mm Short or 9mm Kurz.
9mm and 380 use the same diameter projectile, .355 inch
9mm and 380 both use bullets with a diameter of .355. But the answer to the question you're probably asking is, no, you cannot fire a 9mm parabellum cartridge from a .380 handgun. The 9mm cartridge is different than the .380 cartridge. Even though both are 9mm in diameter, the overall cartridge lengths are different.
380 and 9mm ammunition IS NOT INTERCHANGEABLE.
380 aka 9mm Kurz ammuntion only. BTW, the 380 and 9mm use the same size projectile. Difference is the case length.