Arrow weight 385 grains 500 grains
Arrow @ 70 pounds 319 fps 288 fps
Arrow @ 60 pounds 294 fps 264 fps
Draw length was not given, but I suppose it was the IBO rating.
Martin specifies 320 - 330 fps speed. IBO specifications use a lighter arrow (350 grain). So it 319 fps was measured with a heavier arrow (385 grains), it should be well within specs!