Dynamic engraving processes upon a projectile under five charge cases were studied using numerical simulations. A finite element model of the rotating band engraving into the forcing cone of the barrel was constructed, and the deformation process of the rotating band, the projectile motions, the dynamic engraving resistance, the average work pressure and the engraving pressure were obtained. The simulation results show that the interior ballistic parameters, including the engraving speed, the projectile motion, the maximum engraving resistance and the engraving pressure are different for different charge cases. This work provides an approach to investigating the interior ballistics processes considering the dynamic engraving of rotating bands.