Since it has such a small bullet and is not too wind resistant, I'd say 200 yds max. Start out at 1 1/2" high at 100 yds and then go to a spot where you can shoot at 200 and see where the impact is.
-------------------- Lo do they call to me,
They bid me take my place among
them in the Halls of Valhalla,
Where the brave may live forever.