Enter the bullet weight (grains) and the velocity (fps) into the Power Factor Calculator. The calculator will evaluate the Power Factor.
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Power Factor Formula
The following two example problems outline the steps and information needed to calculate the Power Factor.
PF = W * V / 1000
Variables:
- PF is the Power Factor ((gr-fps))
- W is the bullet weight (grains)
- V is the velocity (fps)
To calculate the ballistic power factor, multiply the bullet weight by the velocity, then divide by 1000.
How to Calculate Power Factor?
The following steps outline how to calculate the Power Factor.
- First, determine the bullet weight (grains).
- Next, determine the velocity (fps).
- Next, gather the formula from above = PF = W * V / 1000.
- Finally, calculate the Power Factor.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
the bullet weight (grains) = 125
velocity (fps) = 1000
PF = W * V / 1000 = ?
