500 fps,
If I understand you correctly the answer is yes. I took Blodg's original force/draw data and arbitrarily changed the numbers to hold the 70#'s as you said. The total energy picked up was 2.875 ft/lbs. I then calculated what his 295ft/sec 350 grain arrow would do if we pumped in another 2.875 ft/lbs of stored energy. It came to 300.1 ft/sec.