Ive shot a single pin for about 10 years now and at the present I have an Impact Cosmic, and its the best Ive seen yet. I have mine merked 20,30,40,50,60 but just for 3-D and practice. When Im hunting I set it at 25 and leave it, unless the deer is slow coming in, then I may move it to the exact yardage, but rarely do I have time for that. My AR is shooting about 276 and if I shoot 30 yards with my sight on 20 Im about 3 inches low, so at 25 Im set for any yardagethat Ill shoot while hunting.