Rock, you going to try out those Atoms? That guy posting the info on them kind of got me interested in them but I'm still not able to get out the bows and really do any real pulling and testing. Was actually thinking of trying them out with my traditional rigs but I just don't know if that would supply enough energy and speed for the "compression" of those wire cutters to be effective in their design structure. If it was, then they would be a mighty good idea to use with the slow traditional. At my length and weights I'm averaging 212 fps from that takedown of mine. Those heads may give me around 8fps more give or take 1.