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F-20. Trajectory is the curved path of the projectile in its flight from the muzzle of the weapon to its impact. The major factors influencing trajectory are the velocity of the round, gravity, rotation of the round, and air resistance. As the range to the target increases, so does the curve of trajectory. (See figure F-7.)
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Go Back To: U.S. Army FM 3-21.8: The Infantry Rifle Platoon and Squad