I have a Bushnell 800 and its great! never had any issues. It states its accurate +/- one yard. I used a wheel measurement tool and dang sure was right on. At 400 yrds it was dead on! would of measured farther but i wont be making any shots over 250 anywaysIve used the scan feature and tracked deer in CadesCove in Tenn. LOL and itwas great at what it indicated, 600 yrds.