I believe it depends on which module is installed , you probably could get a 29.5 draw length if it was set with a 29 draw length module , but you might be over rotating the cam.

if you check on the cam theres a ltitle metal piece screwed on it with two little screws , there should be a number on it. For example mine says pat#3.5 (pat=patriot)

hope this helps ,

nick