RE: Let's define what we are feeling....shall we? :-)
Matt,
I think your definitions are a bit confusing, at least to me.
Handshock and vibration are one in the same from what I can feel. I have no way of decerning between the two. Something that happens within a split second and then is over, can't be divided into different components in my opinion. It will only be confused by those who can't figure out where one stops and the other starts (I'm one of those). It's felt in the hand and that is all I can tell.
If handshock in your definition has no vibration, then maybe you're referring to recoil. Recoil is felt by the bow pushing off your hand. If hand shock does contain vibration, well then that's vibration.
What I'm getting at, is that I cannot divide what I feel into the words you've chosen. I feel recoil and I feel vibration, thats all.