The most common cathridge are the 7.62x51mm NATO for anti-personnel, and 12.7x99mm NATO for Anti-Material. You have to add the .338 Lapua Magnum (or 8.6x70mm in metric) and others less use.

For the Eastern Country there are the 7.62x54mm, 12.7x108mm and 14.5x114mm

For the Rifle

Accuracy ...

There the link

http://www.youtube.com/watch?v=IP_GTx4o134

The metal storm have a lot of other great application. My favorite is the 3GL, the Metal Storm Underslung Grenade Launcher, that contain 3 40x46mm Grenade in what we could call semi-automatic. The Grenade are made by ST Kinetic Singapore and are Caseless like the 40mm VOG-25 Russian UGL Grenade. The ...