I really don't get caught up in the speed aspect of bows because I am a long draw and a heavy puller so I know the speed will be there. I am just curious if anyone is getting any speeds that would calculate close to the IBO. I believe last time I tested my bow in the spring I was pulling 71# draw weight and my draw length is 30" with a 434 grain arrow and if my memory serves me right it was hitting speeds of 304 FPS with only a draw loop and a peep sight on the string. I am just curious to find out what speeds other people are getting out of the Silencer and if these numbers would reach IBO? Again, I am not caught up in speed because I know it will be there for me. Thanks guys.