I have an 03 Ultratec 60# 28" AMO Spiral Cam 1/2 shooting 300 fps. I cronoed it many times with onlookers. I love to see the look on there face.
Now, I have a WC strings and and cables, loop, peep and two speed nocks at the bottom nothing else. 60# shooting CXL 205' s right at 5 gr per. From what I have seen the cam 1/2 can not generate theses speeds.