Sig's top RF's are damn good, not sure about their lower levels I have a kilo 2400, does all the ballistic calc's, does the weather, has AB ballistics on board and gives you your dope for a shot, and reaches way out there, some guys are getting reflective targets at 3000 yards..I can and have got readings on trees at over 1800 yards, on rock faces past 2500 yards.. animals a couple of moose at over 1500 yards...But its an expensive RF, they make one a step down with out the weather and ballistics that is a fraction of the price...