At 29 inch draw and 65 pounds my '04 does 293 fps with a 392 grain Easton FatBoy. With a 350 grain 5575 GoldTip it will do 308 fps. These arrows weights were obtained by weighing them on a Hornady powder scale so they are actual weights. I'm guessing that you could deduct 2 fps per 1 pound draw weight decrease to 60 pounds and arrive with a speed of 283 fps and 298 fps for the 350 grain arrow