ABSTRACT
Projectiles rarely leave the tube with their velocity vectors aligned with the geometric axis of the gun tube. This chapter describes this behavior. The result of this behavior is weapon inaccuracy, and it must be well understood by the practicing ballistician, because although it is not practical to completely eliminate the behavior, we would like to reduce it to acceptable levels. The first component of this behavior is known as lateral throwoff. It is a dynamic response of the projectile to either a static or a dynamic imbalance and is described in detail.
