Ordinate

H - MAXIMUM ORDINATE (HIGHEST POINT OF TRAJECTORY)

O 200 400 600 800 1-100

Maximum Ordinate. This is the highest point the trajectory reaches between the muzzle of the gun and the base of the target. It always occurs at a point approximately two thirds of the distance from the gun to the target. The maximum ordinate increases as the range increases.

Cone of Fire+ This is the pattern formed by the different trajectories in each burst as they travel downrange. When several rounds are fired in a burst from a machinegun, each

round takes a slightly different trajectory. This is primarily caused by the vibration of the gun. Variations in ammunition and atmospheric conditions also contribute to the different trajectories.

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