Never use k98. It is the worst weapon in the game. It only does 83 in 1. DOD sucks as a game and it is broken, messed up, and the weapons never do what you want them to do. To the point that it is possible to get 7 83's in a row in one life without killing anyone (speaking from experience). Might as well go with garand. Use it like a k98 but it is faster and you still have to hit everyone twice.
Also if you want cheap kills make sure to use nades like a moron. Do not even aim. If people aim at you do not shoot back. Just take out a nade and charge at them like a moron, you will get a kill or two every single time. Why? Because the game is awful and the nades are ridiculously overpowered.