I figure one of you can answer this ? I switched from a 393 grain A/C/C arrow (@ 290 fps) to a 352 grain PSE CF arrow(@308 fps).Before everyone gets out their calculator , I also adjusted my draw length out a 1/2 ".Both arrows are fletched with feathers.Both shoot very well.The PSE arrows are much noisier in flight,though.I can hear them all the way to the target,noticed some deer ducking,etc.

Is this just an adverse affect of high speed or something else ?