Hey Buckrot,im actually shooting around a 320 gpi,my arrows are cut at 25',shooting PSE X weave 300 which are 8.8 gpi. i wanted to get as much speed as i could and by cutting down my arrows to 25' made my bow shoot 348 fps(shot thru chrono at the pro shop several times,just to see how fast it was)i dont have any problems shooting my setup,its smoking fast and relatively quiet,the arrows shoot flat and tru,this things a booger on my target out to 40 yards. this has to be the best bow ive ever shot,smooth,lightweight,and really fast.