View Single Post
Old May 9, 2013, 03:41 AM   #3
Senior Member
Join Date: February 9, 2006
Location: Homes in Brooklyn, NY and in Pennsylvania.
Posts: 4,507

With all due respect, the relationship between a bullet and the proper twist rate has little to do with bullet weight.
The Greenhill Formula for calculating twist rates does not require any weight input, though there is input for specific gravity. The necessaries are bullet length, bullet diameter, and velocity.
See this link:

“Auto racing, bull fighting, and mountain climbing are the only real sports ... all others are games.” Ernest Hemingway ...
NRA Life Member
darkgael is offline  
Page generated in 0.04157 seconds with 7 queries