Modified to shoot arrows at about 400 fps. Some guys have .25 caliber pellet version approaching 100fpe. In america, we think of air rifles as the Red Ryder youth gun but people forget air rifles are used before gun powder rifles. There were air rifles powerful enough to bring down elk. In the 17th century, air guns, in calibers .30–.51, were used to hunt big game deer and wild boar.
http://youtu.be/0Q7mnsZ70D8