Originally posted by lazs2
When you got down to a revolver or pistol... the 45 was the king in ball ammo military form.
Then why is the .45 not the preferred ammo of military submachineguns and pistols today? Why hasn't other nation tried to copy the .45 ACP cartridge for their own post-WWII weapons?
The reason is the .45 is not the ideal pistol cartridge for military use. It has virtually no penetrating power compared to 9 mm Parabellum and other military pistol cartridges. The .45 ACP's only redeeming feature is that is is somewhat better in suppressed weapons since the bullet is already almost sub-sonic and thus keeps more of its energy compared to higher velocity rounds like the 9mm P. The 9 mm Parabellum has a very good balance of stopping power, penetration and low recoil. Perfect for military application the 9mm is almost in universal use throughout the world ... including America.
As for handgun match the Germans had their P38 pistol, widely regarded as the finest pistol of WWII, and it fired the same 9 mm round as their MP38 and MP40 submachineguns. The Russians matched their Tokarev pistols (Browning clone) with their submachineguns.