I have my talonp shooting 20 shots with the average of 864fps on a 2800psi fill with JSBs 25gr. power wheel 0. Top hat 0.990 with a o-ring under the top hat. I am very happy with the tune but I do have a Talon Tunes top hat with inserts on the way. My gun is very accurate at 40 yards, but I may still be wasting air. The barrel is only 12in. and does not take very long for the pellet to exit the barrel so the longer the top hat dwells in the valve the more air wasted .
I have my talonp shooting 20 shots with the average of 864fps on a 2800psi fill with JSBs 25gr. power wheel 0. Top hat 0.990 with a o-ring under the top hat. I am very happy with the tune but I do have a Talon Tunes top hat with inserts on the way. My gun is very accurate at 40 yards, but I may still be wasting air. The barrel is only 12in. and does not take very long for the pellet to exit the barrel so the longer the top hat dwells in the valve the more air wasted .