The 9 mm Largo is a semi-automatic pistol cartridge that originated in Spain and is also known as the 9 mm Bergmann-Bayard. It was developed in the early 20th century and is characterized by its slightly longer case compared to more common 9 mm cartridges, such as the 9 mm Parabellum. The 9 mm Largo was used in various military and police firearms, particularly in Spain, and has largely fallen out of widespread use in favor of more modern calibers. However, it is still encountered in some vintage firearms and among collectors.
9 caliber is 0.09 inch, smaller than any standard ammunition made. 0.09 inch = 2.286 mm. Perhaps you were thinking "What caliber is 9 mm?". 9 mm = 0.354 inch = 35.4 caliber.
9 mm
No! 9mm = .35 caliber - .354 caliber!
It depends to an extent on what you are trying to do.
Yes. .38 special is a revolver cartridge and .380 is an auto cartridge. Also, the .38 will almost always have a heavier bullet and more muzzle energy than a .380. The .38 bullet is 0.357 inches in diameter while the .380 is 0.355 inches in diameter. Technically, the .380 cartridge is considered part of the 9 mm class of bullets. [9 mm x 19 mm = 9 mm Luger or 9 mm Parabellum, 9 mm x 18 mm = 9 mm Tokarov, and 9 mm x 17 mm = .380 ACP]
You can from some, but they have to be designed to shoot both.
No. Only use what is stamped on the barrel.
Roughly .275 or .28 caliber. Take MM divided by 25.4 (mm/inch) and you get caliber in hundredths of an inch.
.68 caliber is ABOUT 17mm.
Short answer, a 9mm is smaller in diameter and lighter.
No. 9mm and .40 are not interchangeable.
Yes they is a differnent. When people say "38" they usually mean .38 special, which is a revolver cartridge. .380 ACP is a semi-automatic cartridge. The bullet in a .380 cartridge, even though it's called .380, is actually very slightly smaller in diameter, and lighter than the bullet in a .38 cartridge. The .38 bullet is 0.357 inches in diameter while the .380 is 0.350 inches in diameter. Technically, the .380 cartridge is considered part of the 9 mm class of bullets. [9 mm x 19 mm = 9 mm Luger or 9 mm Parabellum, 9 mm x 18 mm = 9 mm Tokarov, and 9 mm x 17 mm = .380 ACP]