I have just put all my specs into an arrow speed calculator and it tells me that the speed of my 07 Jaguar(IBO: 310 fps, Arrow weight: 420 grains approx., draw length: 27.5, draw weight: 62lb. approx.) is approx. 238.4fps. So I am wondering, is this a good or bad speed for this bow? This of course is my hunting setup. Also, does my custom string with less strands make the bow faster?