Your arrow probably weighs around 500gr. I'm shooting 275 +/- 2 fps. My setup is similar to yours. I shoot a FX at 29"-70# and my arrow is weighing in at 380gr.

I can never remember the numbers, but the 1" in drawlength will add speed, and the heavier arrow will decrease it....as will the lower draw weight. It you comapre it to my setup, I'm gonna guess your speed to be closer to 230-245fps.

HELP!