As far as mag capacity is concerned, remember, it was designed in WWII, when the Garand's semi-auto action and 8 round clip made it the supreme weapon. It was designed to compete in a WWII type of battle, not WWIII.
Also, as far as asking who's used the SKS in combat... I think most of them would be on the other side.
Also, as far as asking who's used the SKS in combat... I think most of them would be on the other side.