I have two .223s. One is wearing a Cabela's Tactical scope set up for a 55gr bullet. I dial the scope for shots beyond 100 yards. The second one I put a Nikon Coyote 4-14X40. Not sure how I like the Nikon yet, have not used it that much, but faster not having to dial. Top circle 100 yards, bottom top circle 200 yards, second circle 300 yards, third circle 400 yards. Out to 300 it's dead on. The local range only goes to 300 yards. Have not had time to take it out and try it at 400 on the river bank. Plus it's too cold, it's 45 below this morning, only up to 37 below at 1:55.