FPE calculator helps you calculate how much power a moving object has based on its speed and weight. It helps airgun enthusiasts determine the muzzle energy of their shots and helps them choose the right ammunition for different targets and needs.
\(\text{FPE} = \frac{\text{V}^2 \cdot \text{W}}{450240}\)
Where,
Let’s say, we have a scenario where a projectile (like a bullet) is moving at a velocity (V) of 100 feet per second (fps), and the projectile has a weight (W) of 200 grains.
Now, using the formula:
\(\text{FPE} = \frac{\text{V}^2 \cdot \text{W}}{450240}\)
How to calculate FPE?
Therefore, when the projectile moves at 100 fps with a weight of 200 grains, it would have around 4.44 Foot-Pounds of Energy (FPE).
Scenario | Pellet Weight (grains) | Velocity (ft/s) | FPE (ft-lb) |
---|---|---|---|
Hunting small game (squirrel, rabbit) | 7.9 | 850 | 16.9 |
Plinking targets (cans, paper) | 5.5 | 700 | 10.5 |
Long-range shooting (30+ yards) | 10.5 | 900 | 29.7 |
Pest control (birds, rodents) | 8.2 | 1000 | 33.3 |
Target practice (competition) | 7.0 | 800 | 14.0 |
High-powered PCP air rifle | 14.3 | 1200 | 71.3 |
Low-powered CO2 pistol | 4.5 | 500 | 5.0 |
Customized air gun setup | 10.0 | 850 | 22.2 |
Backyard target shooting | 6.5 | 750 | 11.8 |
Pest control (larger bird species) | 12.0 | 1050 | 44.1 |
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