Recently tested My new X-tec will various arrow weights, but this will probably be my hunting setup for next year:

68lb., 29.75 measured AMO draw length, brass nock, tru-peep, eliminator button, A/C/C arrow weight 420 grains-------283 fps.

The x-tec seems to shoot my heavier hunting arrows faster than another bow I have even though the IBO speed of the other bow is 20 fps faster than the x-tec.