(One point of windage at 200 yards causes the bullet to strike 8 inches
to the right or left of the line of aim; one point at 300 yards causes a
12-inch deflection of the bullet; one point at 500 yards a 20-inch
deflection, and so on.)
ELEVATION
General rule for changing the elevation after hitting the target: A
change of elevation either up or down, of 100 yards on your rear sight,
will raise or lower your bullet in inches on the target equal to the
square of your distance in yards from the target. I.e., a change of 100
yards in elevation on the rear sight leaf while firing at the 200-yard
range raises or lowers the striking point of the bullet at the target 4
inches. A similar change while firing at the 300-yard range raises or
lowers the striking point of the bullet 9 inches, at the 400-yard range
it would be 16 inches, at the 500-yard range 25 inches, and so on.
The following illustrations are self-explanatory in regard to windage
and elevation changes and should be diligently studied during
preliminary instruction.
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