i have a single pin HHA sight and love it. switched from a multipin to it cause of all the clutter. if you are thinking about getting a single pin sight then get an hha. if your happy with 3 pin sight then yea i would have my first pin at 25. you will be good out to 30 yards with it with about only an inch of drop at 30 yards and maybe shooting an inch high at 15 and 20 yards. i think there would be too great of a differnce tho if you set your second pin to 40 yards i would set it at around 35 and your last pin i would set around 45 yards.