| LRF |
| (.333 member) |
| 22/08/22 06:39 AM |
|
Re: The Greenhill Formula for calculating barrel twist rate
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Quote:
Re the Greenhill Formula, my lack of knowledge of physics might show but I would have thought bullet weight might have been relevant as well in a formula?
But maybe not.
Greenhill is a 25,000 foot high estimate. When getting down to earth bullet weight, bullet shape and speed all play into a fine tune twist.