The difference between 70# and 62# was 9fps. How much of a difference in KE is that? Not enough to matter. Besides, who measures KE at point of impact? Most folks I know get speed through a chrono at 6 ft. Not 20 yds. I'm very curious about the measurments in KE I would get out there with the difference between 70 and 62.
Also Dave I don't agree with your assessment of my ethics at all. A 49# recurve is more than ethical IMO. It is capable of making a quick, clean kill. That TO ME is ethical.