[Elderberry]

Miller twist rule is a mathematical formula created by Don Miller to calculate the optimum rate of twist for a given bullet traveling through a rifled barrel.[1] Miller suggests that while Greenhill's formula works well there are better and more precise ways to calculate what the proper twist rate for a bullet should be that are not much more difficult to calculate.

https://en.wikipedia.org/wiki/Miller_twist_rule

[Zeneta]

I found this episode of “Mythbusters” fascinating.

“Bullet Fired vs. Bullet Dropped”

https://www.youtube.com/watch?v=abUBrQmI33Q&list=PLOdnh5J_7Iy7KerFi9J_HX0nPLndzo_F7&index=5

[BornToBeAmerican]

US General Julian Hatcher wrote of this and many other related topics. I am sure he included this very (Millers) formula in his book: Hatchers Notebook. This has the best book written on the subject of anything to do with rifles and projectiles. Amazon have it listed here: Hatchers Notebook