Been out this evening bunny bashing with the s510 supperlite 177, and took my sons mate with me, aged 23. total only 8. but tried a silly shot that look about 75/80 yards. hit the rabbit perfect. shot it be hide the eye. and dropped stone dead two mill dots over. past it out at 77 , so at around 70 yards i would say. did not think it would give such a clean kill at that range. dont get me wrong i only normal take them at 50 yards. will try and get pics up, as he as put them up on facebook site . if i can work out how to copy them.