We have them in swedish military. Same as above but semi-automatic. They are cool but not as usable in real world as you might think.
They are heavy and altough long-ranged, bullet trajectory is somewhat hard to predict. With other words, usable range isn't that great as you would expect.
Good for destroying equipment though. Not soo good for shooting enemy soldiers. It has quite a recoil. Sub-calibre ammo isn't used. Armor piercing and fire-ammo is.
We use whort and long version. Long is used by ingeneering troups and short one is hauled by "hunter"-troops.
