All of my rifles wear Leupolds.
I shot prairie dogs last weekend with my Tikka T3x Varmint (Land Whore) in .223 wearing a Leupold FX-3 12x40 AO Target scope, 75 grain ELD-Ms. Brutal on the dogs, typical shot was 300 yards, farthest was 400 yards. Only head shots counted.
Range finder on a tripod and a good range card.
Pretty explosive?