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Old 11th November 2014, 11:20 PM
cloverleaf cloverleaf is offline
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Join Date: Sep 2014
Location: Oxfordshire
Posts: 117

Originally Posted by Brian.Samson View Post
9.80665 = 32.174 which is what I tend to use.
That means you'd be using the constant 450436 in your calculations.

800 fps for an 8.4 pellet would be 11.935fpe
or 11.99fpe for an 8.44grn pellet.
Cool - makes sense that a standard value would be used in calculations.. you'd have to find a very bored or pedantic official to go to the lengths of measuring local gravity when testing your rifle..

I did wonder if this standard figure is what Skan chronos use to calculate muzzle energy and was going to test it, although the readout doesn't have enough decimal places to quantify the 0.04% difference in the results
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