Range-

Norb occasionally throws in a 29" AMO draw at 60#' s for comparison with his standard 30" AMO measurements at 50# and 60#, like he did in his review of the Darton Rampage.

The IBO rating never specified a 30" draw, simply 5gr/pound for equipment safety. Nowhere does the manufacturer have to adhere to 30" draw at 70#' s (unless they specifically state it). A manufacturer could rig up a bow at 74#' s and 31" draw with a 370gr arrow, put it through a chrono and call that its " IBO Rating" .... [X(] You can see how some manufacturers could fudge speed ratings. The AMO paramters are very specific and much more telling. But the AMO numbers don' t look nearly as flashy on advertisements as the big-number IBO speeds do.