Calculate the ballistic coefficient of a projectile to determine its ability to overcome air resistance.
Projectile Properties
Ballistic Results
Enter parameters to calculate
About this calculator
Quick Reference
mMass in pounds (lb)
dDiameter in inches (in)
iForm factor (dimensionless)
7000 grains1 pound
Overview
The ballistic coefficient (BC) is a measure of a projectile's ability to overcome air resistance in flight. It is calculated using the mass, diameter, and form factor of the projectile.
💡
Pro Tips
A higher BC means the projectile will lose less velocity over distance.
Form factor (i) compares the projectile's drag to a standard model (usually G1 or G7).
Diameter should be in inches for standard BC units (lb/in²).
!
Fun Facts
"Most modern rifle bullets have a BC between 0.3 and 0.6."
"The G1 model is for flat-based bullets, while G7 is designed for boat-tail bullets."
"Sectional Density (m/d²) is the main component of BC."
