Hodgdon shows 67.5 gr of Retumbo with a 129 gr Hornady for 3171 fps I used 62 gr of Retumbo powder for my load which clocked 3205 fps from my gun, so make sure you start low when use the Scirocco or your pressures will go through the roof. You might want to check out Hodgdon's new data for the 264 Win Mag, Win 780 and Retumbo seem to be the best of the powders they list. It really is amazing the long range potential of this load. I just need some nicer weather and I will try it at 300 - 400 yards (I only had a chance so far to shoot it at 200).
