I have not had a problem with my range finder working. Well it does struggle in a snow storm, but that is expected. In some light conditions it is hard to pick the red up, I have found that I can be very repeatable by sort of knowing were the range box appears, shooting the range and then moving to a darker back ground to see the reading. This does not happen very much. I guess I would still prefer the range button on the right side, since I am right handed. Nothing is perfect and I still think these were a great purchase from a LOT of saved Cabelas points!