These require center fire rifles only, and typically are started with initial sighting-in being done at 25 meters for setting Battle Sight Zeroes, followed by shooting at known distances of 100, 200, 300, and 400 yards, as a minimum.
12.
The ladder aperture sight moves vertically on a slide, and hence was not able to correct for wind drift . The rear sight element was protected by sturdy " ears " and proved to be faster and more accurate than the typical mid-barrel sight offered by Mauser, Enfield or the Buffington battle sight of the 1903 Springfield.
13.
The blue area and white wavy base refer to the Caribbean and the white disc to the Island of Puerto Rico, the white disc also simulating a pearl, Puerto Rico being known as the " Pearl of the Antilles . " The furison, a steel device for striking against flint to create a fire, is an ancient heraldic symbol and simulates a battle sight on a rifle.
