Well the HHA is a slide you can set any increments you want on it. I hunted with one for 2 years. I went backto a five pin sight this year.

They are great sights, I just didn't want 1 more thing to worry about at that crucial time. What yardage did I set, looking and adjusting instead of looking for the shot. Suppose the deer is moving and you have to keep sliding and looking etc. I decided it wasn't for me anymore.