The fact that the shop had every model, and every model did it.....makes me think it is just something a Hoyt bow does.

nodog, You are right the more I listen to it, I realize it isnt much sound at all, but it is one of those things that when conditions are right and you do hear it, ya just cant get it out of your head and its sounds as loud as a gunshot. The pro shop said the same thing you did, they pointed out that lil' stopper and said that is what it is and Hoyts do that.