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Determining proper rate of twist for a given load/bullet/velocity etc.

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https://forums.accuratereloading.com/eve/forums/a/tpc/f/9411043/m/11510244

20 August 2002, 14:20
wildcat junkie
Determining proper rate of twist for a given load/bullet/velocity etc.
There is a formula for this, anyone know some links or data?

Can this data be used to tailor a load for a given rate of twist in an existing rifle?
20 August 2002, 14:35
Zero Drift
WJ - Here is a simple calculation site - http://www.realguns.com/calc/riflingtwist

Here is a complex calculation site - http://www.lascruces.com/~jbm/ballistics/drag/drag.html
21 August 2002, 02:32
Dutch


[ 08-20-2002, 17:34: Message edited by: Dutch ]
22 August 2002, 09:46
<Don Martin29>
If your thinking about conventional sptizer type bullets then http://www.bergerbullets.com can fine tune it for you.

But consider that a fast twist is the side to error on and that if monolithic bullets catch on they will require a faster twist for the same weight.