Manual for Noncommissioned Officers and Privates of Infantry of the Army of the United States, 1917 eBook

United States Department of War
This eBook from the Gutenberg Project consists of approximately 376 pages of information about Manual for Noncommissioned Officers and Privates of Infantry of the Army of the United States, 1917.

Manual for Noncommissioned Officers and Privates of Infantry of the Army of the United States, 1917 eBook

United States Department of War
This eBook from the Gutenberg Project consists of approximately 376 pages of information about Manual for Noncommissioned Officers and Privates of Infantry of the Army of the United States, 1917.

Notice your rear sight.  When the leaf is laid down the BATTLE SIGHT appears on top.  This sight is set for 547 yards and is not adjustable.  When the leaf is raised four sights come into view.  The extreme range sight for 2,850 yards at the top of the leaf is seldom used.  The open sight at the upper edge of the drift slide is adjustable from 1,400 to 2,750 yards.  To set it the upper edge of the slide is made to correspond with the range reading on the leaf, and the slide is then clamped with the slide screw.  This sight also is seldom used.  The open sight at the bottom of the triangular opening in the drift slide is adjustable from 100 to 2,450 yards.  To set it the index line at the lower corners of the triangle is set opposite the range graduation on the leaf and the slide clamped.  This and the peep sight just below it are the sights most commonly used.  To set the peep sight, the index lines on either side of the peephole are set opposite the range desired and the slide clamped.

Notice the scales for the various ranges on either side of the face of the leaf.  The odd-numbered hundreds of yards are on the right and the even on the left.  The line below the number is the index line for that range.  Thus to set the sight for 500 yards the index line of the slide is brought in exact line with the line on the leaf below the figure 5 and the slide clamped.  To set for 550 yards the index lines of the slide are set half way between the index lines on the leaf below the figure 5 on the right side and the figure 6 on the left side.  Look at your sight carefully when setting it and take great pains to get it exact.  An error in setting the width of one of the lines on the leaf will cause an error of about 8 inches in where your bullet will strike at 500 yards.

The WIND GAUGE is adjusted by means of the windage screw at the right front end of the base of the sight.  Each graduation on the wind-gauge scale is called a “point.”  For convenience in adjusting the line of each third point on the scale is longer than the others.  If you turn the windage screw so that the movable base moves to the right, you are taking right windage, which will cause your rifle to shoot more to the right.

It is seldom that a rifle will shoot correctly to the point aimed at at a given range with the sights adjusted exactly to the scale graduations for that range.  If your sight is not correctly adjusted for your shooting and you wish to move it slightly to make it correct, remember to move it in the direction you wish your shot to hit.  If you wish to shoot higher raise your sight.  If to the right, move the wind gauge to the right.  Always move your sight the correct amount in accordance with the following table: 

SECTION 3.  TABLE OF SIGHT CORRECTIONS.

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Copyrights
Project Gutenberg
Manual for Noncommissioned Officers and Privates of Infantry of the Army of the United States, 1917 from Project Gutenberg. Public domain.