By John Farnam
Ft Collins, CO –-(
However, the foregoing holds true only when the rifle itself, as it is fired, is perfectly vertical. When a shooting position necessitates the rifle be fired from a “rotated” position, the six-centimeter standard collapses after 150m.
Thus, I tell students that their M4 is basically a 150m gun. Within that range, it is deadly accurate, no matter the shooting position, no matter the wind, no matter most other factors.
The “back-curve zone” is that portion of the trajectory which lies between maximum point-blank range and the ultimate point of bullet impact. Any time a rifleman is working in ranges that involve the “back-curve” of the trajectory, that is, after the bullet has fallen more than six centimeters below the sight line (after the second intersection), the path of the bullet becomes harder and harder to predict.
The rotating bullet is designed to remain stable …Read the Rest