I am not a ballistics expert, buy obviously my 18 year old son is. How far will a .22LR travel accurately? I know there are a lot of variables, but just for the sake of satisfying him. How far will a .243, .308, 7mm, 7.62 travel under the same conditions? If there are some charts on the net somewhere, please forward the link. Also, explain what makes one round travel farther than the other. I guess sometimes it is more believeable when it comes from someone other than your dad!