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Old 11th November 2014, 10:53 AM
neilL neilL is offline
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Join Date: Mar 2010
Member of: NOFTC CRPC
Location: Oxford
Posts: 576

Kinetic energy = 1/2 * mass * v^^2

Joules = 0.5 * Kg * M/s * M/s

Ft-lb ain't exactly SI :-)

It really is about time that FT went metric and then we would use real MOA not "Shooters' MOA"

800fps = 243.84 M/s
7.9grains = 0.51191g = .00051191Kg

Energy = 15.2J


If it was 8.4grains then 16.18J for "800fps"

Velocity squared really makes the difference when it comes to errors or hammer settings.

Grain of what? wheat? rice? presumably it was some cereal crop :-)
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