Ballistic Coefficients

Ballistic Coefficient (B.C.) is the numerical evaluation of a projectile’s efficiency in flight. The B.C. gives us a very small window of the projectile/bullet’s ability to overcome external factors such as wind and gravity. Using B.C. along with muzzle velocity and input for wind speed and direction allows the user to determine what to expect in a flight path for a given projectile/bullet. Having a working knowledge of B.C.’s and trajectory programs such as Sierra Infinity can be very beneficial to all shooters.

Bullet selection should not be based on B.C. alone. Selection should also consider factors such as: intended purpose (competition, informal target shooting, hunting, etc.), design (what was the intended purpose behind the bullets construction) and cartridge (what type of velocity range will the bullet be expected to perform at in conjunction with design and purpose).

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