This is my first post! Been hiding in this tree for awhile (not too long,..cold out here!..lol) I haven't seen this info. here nor could I find out else where. Sorry if its a repeat. Now!,..that said. I keep seeing bows advertized with 308fps I.B.O. or 315fps I.B.O.. How does this compair to what your bows REALLY shooting? How do you calculate to get these numbers? Is this why you should try out a couple of different arrow set ups. i.e., broadhead weight, type., arrow weight, fletching? I wasn't checking for speed when I was shooting all those different arrows and set ups just looking for the most accutate, did I miss something? I'm not a fan of speed and I don't shoot 3-D, but I am curious about these numbers for no other reason than, just because???! I hunt deer and turkey and I don't think they really care either! Any and all input, ideas and yeah, jokes too, are welcome on this. Thanks!!