| GENE SLOVERS US NAVY PAGES UNITED STATES NAVY EXTERIOR BALLISTICS 1935 PROJECTILE DRIFT |
| CHAPTER NINE 906 PROVIDES A GOOD DESCRIPTION OF A PROJECTILE AS IT FIRST EXITS THE GUN AND THAT NO PRECESSION OCCURS AS IT ENCOUNTERS THE AIR HEAD ON. ONLY AFTER THE PROJECTILE BEGINS TO FALL DOES THE AIR BECOME GREATER ON THE LOWER SIDE OF THE PROJECTILE AND PRECESSION BEGINS TO OCCUR TO CORRECT THE ANGLE OF THE PROJECTILE WITH RESPECT TO THE ONCOMING AIR FLOW. |