Please bear in mind that the metric calibers describe land diameters (the inner diameter), and imperial calibers the rifling diameters (from groove to groove).
Also, the 8 x 57 JS (infantry special) uses a slightly larger bullet than the 8 x 57J (infantry) cartridge. The former may not be fired from a rifle chambered for the latter, as it would cause excessive(!) pressure, and is therefore marked with a colored primer and a bullet with a grooved ring.
|