I have the TAC 3O 4.5 14x42 and shoot out to 8Om regualy and have aim points on the half Mildot ret to go further shooting .177 cal , if you drop the mag on the scope to 1Ox further still people tend to use high mag scopes for rage finding if you have a lazer range finder dont see the point in very high mag scopes unless you intend to shoot FT