ORIGINAL: gibblet
well, air resistance isn't the only thing. the numbers you gave deal w/ the force of gravity at sea level. at 10,000 ft not only is drag reduced, but so is gravity.
But in a scientific comparison amongst arrows it can be discluded because it's the same for them all. You can't scientifically compare one at sea level with another at 10K'. Another factor in favor of Artie's arguement that personal observations/experiences are less valid than a scientific study.