I found what i think, is a good deal on a 3-12X50mm Bushnell scope for $75. The store has a few of them and at the other end of the scope, it has settings for 100-200-300-400 yards. How does that work? Sight in for 100, turn the turret to 200, sight in for that yardage and so on? I thought that would be cool to have all of those setting preset and just have to give it a turn to the 200 yard spot if the shot will be that far. If i get the scope, this will be my new sniper rifle