Only a draw from 41 yards to 61 yards; before that, the advantage goes to the feathers.
Further tests by Dave Holt showed that the feather fletched arrow was faster than the identical plastic fletched arrow out to 41 yards. The feather fletched arrow then matched the plastic fletched arrow out to 61 yards (the limit of the test range).
Given the inherent FOC advantages of feathers added to the forgiving nature of them, I would say there's a decided advantage in shooting feathers.
Also, given the fact that the old myth about shooting vanes vs. feathers for fear of getting them wet has been proven on here many times to not hold water (pun intended), and that most archers think feathers are more aesthetically pleasing on top of all that... it's no wonder I've shot feathers for well over a decade now.
