When I first started bow hunting, I dry fired the pse bow i had but it didnt do anything to it. Before this past bow season, I was in the market for a new bowtech to replace my bear. The shop i buy from had a PSE X-Force Treestand that someone couldnt hold on to when lowering back down. The bow flew out of the guy's hands. The cams were warped badly and at the expense of the shop owner had to be replaced, because the guy who dry fired the bow somehow got out of the store without anybody noticing.