I'm wanting this sight also. I guessing it should be good out to 90 or more based on amount of tape. Been trying to find more reviews just not a lot out there.
I have one but have not been past 55 yards yet. I did talk to the owner who has that sight on an insanity with a 375 grain arrow (70 pounds) and he was getting right around 100 (can't remember if it was more)