http://www.hodgdon.com/data/rifle/243win.php
is a good site for load data, always crosscheck the data with at least one other source to avoid printing errors.
assuming a muzzle velocity of 2800 fps a 100 grian nosler partition in .243 diameter sighted in 3 inches high at 100 yards
the bullet will impact 3.5 inches high at 150 yards, 2.5 at 200 yards, dead on a 250, 4.5 inches low a 300 yards, and 10 inches low at 300 yards.