ORIGINAL: KodiakArcher
If you're looking at hunting there isn't really a need for that kind of nat's ass precision but for targets, that's why you can get magnifying lenses for many sights, a 3x lense makes the target 3x's bigger in relation to the pin; HUGE advantage. The tradoff is reduced light transmission and glare issues. Otherwise, you're on the right track; the smaller the target, the smaller the pin.
-agreed, sounds to me like you should check out a Toxonics Magnified sight... Im not sure how practical it is for hunting though.. but it would help