Our experiences hunting mule deer so far reveal a shortcoming, finding mule deer in their beds. Can it be done? We've tried, and failed, but maybe we just don't know what the heck we're doing. Our optics aren't high end but we still should be able to see parts, pieces, or whole deer 4-5 hundred yards out, shouldn't we? OTOH, the lack of info found on the subject may mean it's just not a realistic possibility.