#7h29
Modern Personal Defense Weapon Calibers 010: The 9x19mm and 9x21mm Russian Special AP
One potential solution to the problem of a suitable anti-armor pistol and submachine gun round is to take the existing ammunition system and introduce one or more new kinds of ammunition which provide additional armor piercing capability through higher muzzle velocity and tougher core material. This is the route taken in Russia, where in the mid-1990s was introduced several loads for the Western 9x19mm caliber, as well as a new but fairly conventional round, the 9x21mm, also with optional AP load.
