In my opinion, this is where some of the older pump up's have an advantage. I have both, a Sheridan Blue and Silver Streak in 20 cal.. The maximum pumps are 8 and I think it's rated at 800 fps. I don't know if mine shoot that fast or not but I've learned that they are more accurate at 6 pumps with the Benjamin domed pellets and still shoot plenty hard enough to kill a squirrel or a rabbit. I suspect a higher quality pellet may be just as accurate at a higher velocity. With a pump up, you can tune them somewhat by testing at different velocities.