It depends on the individual bow. Generally most bows will be faster at 65% letoff, however that is not always the case even when draw lengths are exactly the same. Depends on how the module or cam is "cut".
That said, I would say a good average would be 4 FPS. I've seen up to 8 or 9 or so, but generally is between 3-6 FPS.
However, your Justice will be adjustable to whatever let-off you wish via the draw stop post.
