Author Topic: Bfx-update 2 april 2011  (Read 4323 times)

admin

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Bfx-update 2 april 2011
« on: April 02, 2011, 08:06:23 PM »
Added conversion from Joule to foot-pound and vice versa e.g. =bfx_u("ft-lb";3000) converts 3000 J to foot pound

ThunderDownUnder

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Re: Bfx-update 2 april 2011
« Reply #1 on: April 03, 2011, 12:51:29 AM »
Thanks Robert, I will update the add-in!
You have made it easy for me now to modify my Free Recoil spreadsheet to satisfy all shooters needs for different units.
When I was a kid in high school, Australia changed its unit system from imperial to metric and we all thought the world would change to SI units. Its a pity it never happened and probably never will.

Ian

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Re: Bfx-update 2 april 2011
« Reply #2 on: April 04, 2011, 07:45:22 PM »
Ian, would it be beneficial to include the Miller formula in BfX?
Robert

ThunderDownUnder

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Re: Bfx-update 2 april 2011
« Reply #3 on: April 07, 2011, 06:52:19 AM »
Robert, I think the Miller formula is fundamental to long range shooting. Anyone building a custom rifle needs to know what twist rate the barrel should have to stabilise the projectile that the chamber has been designed to use.

I think a BfX function for Miller's stability formula would be very much appreciated by all users. It would mean simple integration into a spreadsheet as another output (Sg) using a lot of the same input data for the ballistic functions already in common use.

Robert, if you have the time to implement a Miller stability function in BFX then please do it!

Ian

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Re: Bfx-update 2 april 2011
« Reply #4 on: April 11, 2011, 09:50:50 AM »
... I have first to study the subject a bit ...