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What is Impact Velocity?<br>
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The instant the pellet leaves the muzzle it begins losing velocity and kinetic energy to air resistance. Drag continuously retards the pellet until it arrives at the target. Impact velocity is what it has left when it hits. It's only actual impact velocity that really "counts" and so it's what we need to know when humane kills are the goal.
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This calculator predicts final impact velocity starting from muzzle velocity (typically measured with a chronometer) and the ballistic coefficient of the pellet.
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An "off-label" use of the Impact Velocity calculator involves back-correction for true muzzle velocity of chronometer readings made some distance from the muzzle. To use the calculator this way, enter the chronometer reading in the Muzzle Velocity window and the distance from muzzle to chronometer as a negative number. The "Impact Velocity" returned is then the actual muzzle velocity.
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The Impact Velocity Calculator will transfer velocity values directly to the Wound Channel Depth Calculator for convenient estimation of pellet killing potential.
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Steve_in_NC
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