Having shot many whitetail, what I know for certain is, shot placement is everything. Shoot an animal to high, even through the lungs, and it can take the entire body cavity to fill before major blood loss. That's not saying that its a bad shot, its just that many times there can be very little blood until the body cavity fills. However, if the point of impact is lower, say heart or top of heart, there's much less cavity to fill before heavy blood loss. You can harvest with a marble, but shot placement is everything. Barnes Expanders or T-EZ bullets driven with 110 to 120grs of BH, will handle any whitetail at 200yds.
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