Because of your gun, that’s a loaded question. Here’s why. If my gun has a spot on tune at 900fps and your gun has a reckless tune at 900fps, mine will shoot better than yours. If you have your gun tuned as good as mine at 900fps but my seating depth, how tight I have all my barrel stuff tightened is different than yours, my gun might shoot better. If we use exactly the same settings, same seating depth and torque specs on everything and your reg gauge is off 5 bar compared to mine, my gun might shoot better. So that’s why I don’t concern myself with anything but my own gun. I start at 900fps and tune my gun perfectly every time I jump up 10fps. If things don’t work out I work down to 880fps. If I’m still not happy I order another liner. You already know what speeds pellets like. Time to roll up your sleeves.