Always use less than full magnification. On a 2.5-10 variable it's set on 4 usually. Now I stand hunt in Sask for big whitetails and shots are set at about 100yds. Also hunt elk here. Call move call move. You get the idea. Anyways when trophy deer hunting if a buck comes in that interests me and I don't have my binos then I will crank it up. Hope this helps.