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jr-c1
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I have been attempting to calculate a Ballistic Coefficient (BC) from two velocities of a known distance using the formula:
for example
In this example, I have compared this result with the vendor's published BC (.415) and two online BC calculators (.455 and .422) and I'm considerable off.
As I understand it, air density needs to be factored in.
Can someone help with the correct formula?
BC = (AirDensity * Distance) / ( SQRT(Velocity0) - SQRT(Velocity1))
for example
AirDensity = 0.0751265 lb/ft³
Distance = 100 yards
Velocity0 = 3000 fps
Velocity1 = 2772 fps
BC = 0.0329
Distance = 100 yards
Velocity0 = 3000 fps
Velocity1 = 2772 fps
BC = 0.0329
In this example, I have compared this result with the vendor's published BC (.415) and two online BC calculators (.455 and .422) and I'm considerable off.
As I understand it, air density needs to be factored in.
Can someone help with the correct formula?
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