I have the tranquilizer as well and love it. One problemThe cap on the end blew off once as I shot the bow and little chunks of rubber flew out, as I looked down, the rest of the rubber chunks dumped out<img src=icon_smile_blackeye.gif border=0 align=middle> Thank god I was in a garage and could easily scoop it all back up and reload it. I glued the heck out of the cap and haven't had a problem since. I would recommend everyone to put a bead of glue around the end cap seal.