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Quick Tip: What Is Ballistic Coefficient?

Brownells Gun Techs Caleb and Steve are talking science today, specifically ballistic coefficient. Ballistic coefficient, or "BC", is a measurement of a bullet's ability to overcome drag and wind resistance. BC is usually represented by a number less than 1 carried out to three decimal places. The higher the number, the HIGHER the bullet's ballistic coefficient, which is GOOD. (You can usually find the BC for a given bullet on the box it came in or in your reloading manual.) A long, narrow target rifle bullet with a tapering nose has a high BC, while a short, squat bullet like a round-nosed 230 grain .45 ACP will have a significantly lower BC. Similarly, a Spitzer bullet with a nice boat tail has a higher BC than a bullet of the same caliber and weight with a blunt, rounded nose and a flat base. The high BC bullet will shoot flatter, have less drop, and will be less affected by air resistance. For long-range shooting, ballistic coefficient is a big deal. If you're shooting targets at 100 yards or less, it isn't so important. Even at longer ranges, a high BC bullet may not be your best choice - Caleb explains why. What's your take on ballistic coefficient? Tell us in the comments below. Want more wisdom from Steve & Caleb? Check out our video library - and hit that Subscribe button too!