JBM - Topics

This page address equations commonly used in small arms ballistics. I'll add to the list as required/requested.

Where applicable, variables and references have been listed at the end of each page.

Cant
Derivations of the equations used in corrections to the elevation and azimuth of a canted firarem.

CD and KD
Derivations of the equations used in the point mass trajectory calculations. It includes equations for CD, BC and KD.

Crosswind
Derivations of the classic crosswind deflection formula.

Elevation
A method for calculating trajectories for other than a zeroed range (or for changes in shooting conditions) using the constant elevation angle.

Energy
A discussion of potential and kinetic energy with a worked example.

Integration
Changing variables of integration to make the trajectory equation more convenient to integrate.

Recoil
Equation for calculating free recoil

Sectional Density
Equation for calculating sectional density

Runge Kutta Integration
Equations for numerical integration using Runge Kutta methods.