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DarylS
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Reged: 10/08/05
Posts: 26414
Loc: Beautiful British Columbia, Ca...
Re: Some Info on ball mould size in 12 & 8 Bore ?
      21/12/11 05:03 AM

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.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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Entire topic
Subject Posted by Posted on
* Some Info on ball mould size in 12 & 8 Bore ? Sarg 13/12/11 10:58 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? gatsby   17/12/11 03:44 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? gatsby   17/12/11 03:40 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? CommandCar   17/12/11 02:06 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? Sarg   17/12/11 11:54 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? CommandCar   18/12/11 03:31 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? Sarg   18/12/11 07:13 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? tinkerModerator   19/12/11 01:49 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? Sarg   19/12/11 05:44 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? CommandCar   21/12/11 04:53 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? DarylS   21/12/11 05:03 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? DarylS   21/12/11 05:29 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? Sarg   21/12/11 12:11 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? CommandCar   21/12/11 12:57 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? rigbymauser   17/06/12 06:06 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? CommandCar   21/06/12 08:19 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? rigbymauser   22/06/12 06:25 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? DarylS   22/06/12 01:24 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? DarylS   18/06/12 02:08 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? tinkerModerator   18/06/12 02:05 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? CommandCar   20/12/11 02:23 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? tinkerModerator   20/12/11 02:51 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? gatsby   19/12/11 01:58 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? DarylS   19/12/11 03:53 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? gatsby   18/12/11 04:08 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? CommandCar   18/12/11 04:50 AM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? Sarg   18/12/11 12:32 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? gatsby   18/12/11 01:34 PM
. * * Re: Some Info on ball mould size in 12 & 8 Bore ? DarylS   18/12/11 04:58 AM

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