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Ballistic Chronograph For Air Rifles

Every air gunner should either own or have access to a ballistic chronograph. Firstly it is your responsibility that the airgun does not exceed the power output as stated by UK air gun law. Secondly you want to find the sweet spot of power for your air rifle or airgun.

How Do Chronographs Work

Basically,  chronographs measure the time it takes for a pellet fired from a gun to pass between two sensors. To work out the energy output, which is calculated as feet per second (fps). The reading has to be multiplied by itself, then multiplied by the weight in grains of the pellet and divided by 450,240.

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