You actually hunt with a bow shooting 342 fps? Take something from this old longtime bow hunter, shooting a bow with that light of an arrow is bound to produce more noise. In fact at longer distances I have found that deer are less likely to jump the string because the noise level is less at greater distances. I also hope you have some ommph on the front end of that arrow so it can penetrate. You can use all the Kinetic energy formulas you want, thats on paper my friend, speed may kill but I would rather my arrow go " whomp" instead of " ping" when it hits.

One other thing, you even so much as twitch with your setup and you might as well go look for a lost arrow.[:-]