Rather, they are secondary effects of having a quicker flight to target at the same starting velocity (that is, less loss of velocity due to less drag effect). These two factors affect the accuracy, but it could be argued that they are not, technically, a part of the inherent accuracy of the bullet design itself. It has become a popular if misunderstood way to "judge" the potential drop and wind resistance for a bullet, but has some rather severe limitations as a figure of merit.Īccuracy may be used as a term that includes the shooter's ability to determine range and hold-over amount, and the bullet's ability to maintain a closer track to the point of aim in changing wind conditions. BC is not a precise, one-number measure of performance, but more of an average over the range of velocities at a given air temperature and density as compared to some agreed standard bullet's performance in the same conditions. It is NOT the same thing as accuracy, and in fact, if taken to extremes will destroy accuracy. Ballistic coefficient is simply a comparison of how quickly a bullet is slowed down by air resistance compared to a standard bullet fired at the same velocity over the same distance. The Ultra Low Drag (ULD) bullet represents the maximum theoretically possible ballistic coefficient for a given caliber and weight. Technical Discussion of BC and Bullet Design
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