mauser 8mm????

My grandpa had an old rifle he passed down to me and would appreciate more info if at all possible. All the markings i can see on the gun is mod.98 on the left side of gun and am told it shoots 8 suret not quite sure, it also has an old scope which says. weaver and looks alot like the 80 anniversary k4 series but of course is much older than 2010