To: w1n1
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
To: Elderberry
8 posted on
09/25/2016 11:02:42 AM PDT by
Zeneta
To: Elderberry
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
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson