JBM - Calculations - Recoil Terms

Input Data

Bullet Weight

The weight of the bullet.

Bullet Diameter

Diameter (caliber) of the bullet

Muzzle Velocity

The velocity of the bullet as either (1) measured at some distance from the muzzle (see applicable rule book for measuring methods)

Output Data

Power Factor

Calculated power factor (Weight*Velocity)

Power Factor (IPSC)

Calculated power factor (Weight*Velocity/1000). NOTE: The IPSC rules specifically say not rounding upward. All digits after the decimal place are dropped.

Divisions

Below the power factors are the individual divisions within a discipline. Next to each is a "Yes" or a "No". If "Yes", the caliber, weight and velocity make power factor for that division. If "No", it does not.