i used aimpoint's all the time back in the pistol days, i'v still got a pdp3 30mm, i'v used it on pig 12g and on my .22 for for knocking pigeons down in wooden barns on a old mod site ,if you belive in the dot you will hit whatever you point at , as smullery says mount as far away as you can and look though to the target the dot will be there!! just like pointing a finger with both eyes open then closeing one it will be on target . i'v shoot pigeons out of the sky with mine fitted to my .22 ,and before i get a slap the north sea was my backstop ! good scopes mines nr 30yrs old