Well, the thing is that I said it is 255 real chrono tested not IBO speed, it suppose to be 313 IBO,that meansnaked string (without nock, peep, and silencers), 350 grain arrow, 70lbs. draw weight, 30" Draw Length, that's the perfect test, but may varies between each archer. So for me at 60 lbs and 29" that's 255 aprox in the machine. Every bow is belowwhat they advertise in the IBO speed, around 30%.
But as you said it'sstill a nice one!