Re: range finder??
I've had a pile of the Bushnell models and over the years I've learned that it is VERY IMPORTANT to keep the filter lense(s) dust free and protect it/them from scratches. My first Bushnell was a "try to break it" toy...I baked the thing in the hot sun (it wouldn't function when overheated) and generally abused it. I buffed the filter lense myself once the unit was degraded to the point it'd only range a couple hundred yards at best. The buffing cleared it up some but I've come to believe (after about three (3) trial units) that it is fairly important to take care of the lense(s).
I have a Bushnell Compact 800 now and keep it safely tucked in it's soft case and clean it often...it works remarkable well ranging to over 900 yards (on trees, shrubs and grasses....(I'm an avid tree, shrub and grass shooter [img]images/icons/smile.gif[/img] [img]images/icons/smile.gif[/img] ) in bright daylight.
Conditions I've found that produce problems: Ranging into/toward the sun (the sun is 163,680,000,000 yards...I'd suggest using holdover(s) [img]images/icons/wink.gif[/img] ). Ranging in snow on bright days (sorry elk hunters). Ranging distant objects without a very steady hand or solid rest.
Some of the best objects to range? Reflectors, licenses plates (or pieces thereof), other rangefinders (must be a sympathetic circuit or something such...immediate reading)!!! (Keep your eyes covered around me...I range everything!)