I am considering putting A red dot scope on A 22 magnum for small game such as squrriel etc. I do not know much about these scopes and was wondering if someone could give me some information on them,and if they would work well for small game? Would the dot cover up say A squrriel at 50 or 60 yards? If someone could explain how these scopes work and how to use them for best results on game it would be appreciated.