I think almost no one.
There was, though, a phase in the 70s, and especially 80s when US shooters were very focussed on the velocity they could get out of their air rifles. It was a Big Thing that the .177” HW80/Beeman R1 could make 1000 fps with a light pellet (eg Hobby) and even more so when Beeman tuned them to hit 1100 (that is about 15-16 and 18 ft-lbs respectively).