I have Rinker's book and dragged it out. The chapter describing "yaw" and "nutation" doesn't say that the bullet's path returns to some true path downrange. (Chapter 8 right?)

I have had this discussion with Jeff several times now, and don't doubt his observations. Another good book to read on this is Rifle Accuracy Facts, by Harold Vaughn. Dr Vaughn's says "poor statistics". I try to keep a more open mind on the matter.

If you have Franklin Mann's book, "The Bullet's Flight...", he first describes this spiral path, ingeniously documents it, then sets out to try to understand and explain it. He shows that the bullet does take a spiral path, but the center of the spiral is random once it leaves the muzzle.

I too would like a better explaination of the phenomenon.


Last edited by ChrisF; 03/11/08.