Ballistic Energy Calc
Ballistic Energy Calc has 18,947 installs, rated 5.0 from 90 ratings, #34,968 of 248,245 in Tools.
Description
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This app calculates the muzzle energy, momentum, power factor, and Taylor KO factor for a projectile based on the mass, velocity, and diameter. Muzzle energy is computed using the firearm industry's standard formula. Momentum is calculated using the standard formula. Power factor is mass in grains multiplied by velocity in feet per second, divided by 1000. This is used in IDPA and USPSA competitions. Taylor KO factor is a comparative measure of the knock-down power of a projectile. The formula was developed by John Taylor, an African game hunter, to compare the effectiveness of hunting cartridges.
The calculations in this app can be useful for hunting, reloading, target shooting, archery, and other activities involving projectiles.
Support located at techandtopics.blogspot.com
Supplied under the GNU GPL 3.0
Is Ballistic Energy Calc safe?
StoreTally doesn't rate safety. Here's what the store and our tracking show:
Reviews The reviews Google Play shows first (its most relevant), from the US store, in any language.
From 90 ratings.
Growth change in installs
| Per | Growth | Growth % | Actual change | Measured over |
|---|---|---|---|---|
| day | Not enough history yet | |||
| week | +2 | +0.0% | +5 | 16 days |
| month | +15 | +0.1% | +16 | 31.2 days |
| year | Not enough history yet | |||
How these figures are measured
Change in installs, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.
Tracking since 2026-09-29. History accumulates as changes are observed — check back soon.
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