My notes, which are plagiarized, use at your own peril...
A shooter starts seeing the angle of trajectory influencing the trajectory beyond 30 or 45 degrees, depending on the
distance. The reality of high inclines in long-range shooting is such that most topography does not offer extreme long range
shots at extreme angles. Notwithstanding mountainous terrain, in all probability beyond 1000 yards the rifleman
will not see targets at angles greater than 10 to 15 degrees. When necessary, it is important to account for inclined angles.
Change elevation to adjust for the inclined angle but still adjust for wind at the slope-range distance.
