Well, my Liberty is right on par with IBO speeds. I am shooting a 405 grain arrow at 281 f.p.s. That is from a 71# bow with 29.5" draw length! Also, that is with a brass nock, a peep sight, factory hush kit, and two eliminator buttons. Figure a 5 f.p.s. loss for that half inch of draw length, 4 f.p.s. for the peep sight, 5 f.p.s. for the 2 eliminator buttons, and roughly 10 f.p.s. for the heavier arrow, and that would bring my "guestimated" IBO speed to around 307 f.p.s. Like I said, that is just a estimate, but it is gonna be pretty close!

Hunters Friend also states that they aren't sure that there chrono is right or not, the test was done to get a comparison of the bows!