What do you mean which level?
With the 40gr slugs the hammer spring is maxed out at 160bar, valve closed only enough for a noticeable drop in velocity....from a max of 878 to 863fps.
It shoots the 35gr slugs very well on this tune, 936fps.
30gr slugs have amazing performance at 140bar. Same with 26 and 28gr slugs......they all do well at 940fps.