No. Cartridges in these pistols headspace on the mouth of the cartridge.
380 ACP or 9mm short or 9mm corto
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.
380 ACP, 9mm Kurz
9mm Parabellum- often called 9mm Luger.
.380 ACP, also known as 9x17mm, 9mm Short, and 9mm Kurz.
You can only use .380 ACP ammo in a .380 pistol. Period.
9mm and 380 use the same diameter projectile, .355 inch
While the .380 is sometimes called the 9mm Kurz, it is not the same as the 9mm parabellum (also called 9mm Luger and 9x19). It is shorter than the 9mm.
.380 ACP is simply another name for the 9x17 cartridge, also known as the 9mm Short or 9mm Kurz.
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),
No, the .380 has less power than the 9mm or the .45 .
Have it examined by a gunsmith. It can be chambered for either 9mm Luger or .380 ACP