Unknown 22 Cartridge Shoots Faster than 220 Swift

The .220 Swift is one hell of a cartridge, often said to be the fastest commercial cartridge on the market. But is that true? Perhaps not quite! The claim might be valid in the American market, but there’s a certain german cartridge that can shoot .224 bullets of any given weight up to 100 fps faster than the Swift. To no surprise, the cartridge I refer to has a metric designation: the 5.6x57mm.