by the Ordnance Department contain elevation
charts and all you have to do is to consult the chart of your
score-book in order to get the amount of elevation necessary at any
particular range in order to raise or lower your shots any desired
distance.

=1384. Deflection (windage).= Corrections in the deflection (side
movement) of the bullet are made by means of the windage screw that
moves the movable base, each division of the graduations on the rear
end of the movable base being called a "point of windage."

_One point of windage moves the point struck 4 inches for each 100
yards of range._

That is to say, at 100 yards, 1 point of windage moves the point
struck 4 inches; at 200 yards, 8 inches (2 x 4); at 300 yards, 12
inches (3 x 4), etc.

Consequently, if at 100 yards the wind were carrying your bullets 8
inches to the side, you would take two points of windage to get the
bull's-eye, and if the wind were carrying your bullets 20 inches to
the side, you would take 5 points of windage, irrespective of the rate
at which the wind was blowing.

Again, if at 200 yards the wind were carrying your bullets 8 inches to
the side, you would take 1 point of windage, and if it were carrying
your bullets 20 inches to the side, you would take 2-1/2 points,
irrespective of the rate at which the wind was blowing.

In using the wind gauge remember _windage is always taken in the
direction from which the wind is coming (into the wind) and the bullet
moves in the same direction that the rear sight moves,--that is, if
the wind is coming from the right, you take right windage and the
bullet will strike to the right. Likewise if you move the rear sight
to the left (take left windage), the bullet will strike to the left_.

GALLERY PRACTICE

=1385. Object and importance.= After the soldier has been thoroughly
instructed in sighting, and in the position, aiming, deflection, and
elevation correction drills, he is exercised in firing at short ranges
(50 and 75 feet) with the gallery practice rifle (.22 caliber).

Notwithstanding the value of the position and aiming drills, it is
impossible to keep up the soldier's interest if these exercises are
unduly prolonged. By gallery practice, however, the interest is easily
maintained and further progress, especially in teaching the trigger
squeeze, is made. Many of the external influences, which on the range
affect the firing, being absent, the soldier is not puzzled by results
for which