In thinking about this a little more, since there is an accuracy adjustment factor, assuming it would be safe to say that the Average Damage value could be used as a reasonable estimate of the damage for shots taken at any given range, the 10 lb Parrot doesn't look quite as bad and, in fact, beats the 20 lb Parrot in ranges from 1530 to 1700 yards. Obviously, it's worthless beyond 1700 yards. If you don't think this is a reasonable assumption, please explain why.