Im using the RXII. Not sure its right either. I shot an arrow at what it ranged to be 43/40. It didn't 'feel' 40, So I aimed for 35 and was dead on. On another shot I ranged 52, used my 50 yard pin and hit 2 feet low!?

Both shots were from 23-25 feet up. I've got it set on the fastest bow speed. Maybe I need to read the manual again. I haven't seen more than a 4 yard difference from a tree yet.