| DarylS |
| (.700 member) |
| 21/12/11 05:03 AM |
|
Re: Some Info on ball mould size in 12 & 8 Bore ?
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Quote:
Just a thought, is there a way to use the regulated sights, 100, 200, 300, to calculate the trajectory and back track to the original muzzle velocity?
Yes - but that mathematics is well beyond me (most is).
The distance between sights & their elevation above the centre of the bores gives the elevation change from leaf to leaf, range to range. This can then be applied to a computer program if the ballistic coefficient of the projectile is known. A .735" pure lead round ball has a BC of .104. That's the only one I have. Then working backwards with the program, you can then figure velocity from the elvation needed for given ranges.
Might be simpler than that - I just don't know- but the above makes sense to me.