my rifle came to me shooting jsb monsters redesigned 25.4gr @860fps (which I think is low), and jsb exact heavies 18.13gr @1.000fps (which i think is to high)...I have two possibilities, increase the power to improve the performance of the redesigned jsb monster, or lower the power and use the jsb of 18.13gr, but when I bought the rifle I was just thinking of having a 22 cal high-power so the first option is what i want, I want to increase the power to improve the performance of the heavier pellet.... my regulator pressure is at 160bar, i increased it up to 170bar and pellet speed just decreased so then i knew that it was not de way... Is there anyone here who can help me????