sad/angry/annoyed: shooting hunters

I just read about the 5 hunters who were killed and the three who were injured Sunday in Michigan. Whatever the shooter's motivations were, I can't see how anyone could justify the end of the assault weapons ban. Still, the gun the shooter used, an SKS, would not be covered by the assault weapons ban; it was legally available even when the ban was in effect. It has a fixed 10 bullet magazine, and the speed and force of the trajectory can penetrate the soft armor most police wear (cite, pdf). If hunting is a sport, why does one need a gun with a large clip (that can shoot many bullets without manual reloading)? If one needs a large clip, why not also hand grenades?