FPS doesn't affect range as much as you might think.
I've seen 350fps guns out range 470fps guns by a good 100ft
What matters is what you put in the gun, and WHO puts it in.
Between 380fps and 440fps, the difference in range on my VSR-10 is MAYBE an extra 10 feet. But I've got a maximum accurate range of around 240-260 feet, at 380 or 440 fps