Dynamics simulation analysis on movement process of swept flight assault roof (SFAR) terminal-sensitive projectile (TSP) in bore was made by Adams software. Considering structural asymmetry of SFAR TSP, analyzed the influence of structural factors including centroid location, moment of inertia, etc on the motion process of SFAR TSP in bore. Simulation results show that: when the structure of projectile is asymmetric, the number and force size of contact between bullet and bore increase significantly. Changing the projectile centroid position causes increase of the contact force and the initial swing angle. When the moment of inertia changes, initial swing angle increases, too.