9mm target ammunition is commonly less expensive than .45 ACP.
Less powder for its size.
.38 Special- 9mm is more powerful. ,357 Magnum- 9mm is less powerful.
No, the .380 has less power than the 9mm or the .45 .
The .380 IS a 9mm- a 9mm Short (also called 9mm Kurz or Corto). There are more than a dozen different 9mm cartridges. Most people mean the 9mm Parabellum (also called 9mm Luger) when they say 9mm. The 9mm Parabellum IS a longer cartridge than the .380 .
It is 1mm less than the size of a quarter. 1/10 less...pretty freaking huge
Less than a hundred to multiple thousands depending on specifics
No. There are more than a dozen DIFFERENT "9mm" cartridges, and they do not interchange. The most common is 9mm Parabellum- also known as 9mm Luger or 9x19. It does NOT interchange with 9mm Kurz, 9mm Corto, 9mm Makarov, 9mm Ultra, etc.
Depends to some degree on how the cartridge is loaded, and the weight of the gun firing it- heavy guns recoil less. Recoil is similar to a .38 Special- more than a .22, less than a .45. My granddaughter is in her mid teens and shoots my Browning Hi Power 9mm, so recoil is not that bad.
The M9 is chambered for the 9mm Luger, metrically known as the 9x19mm, less commonly known as the 9mm Parabellum. All 9mm cartridges with any of these names are interchangable.
The actual power of any given cartridge is based on speed and weight of the bullet. There are multiple different loads for the 9mm Parabellum, and for the .45 ACP. HOWEVER- in general, the 9mm Parabellum has a higher energy than the .45 ACP. Search Wikipedia for 9mm Parabellum, and for .45 ACP. Scroll down for energy figures on the left. It should be noted that almost all .45 loads have heavier bullets, and the .45 ACP is generally considered to have greater "stopping" power than the 9mm.