Objective Under the premise that the turnover mechanism could satisfy the charge rate requirements, the study aimed to improve the stability of the turnover mechanism by optimized design. Methods Through the establishment of a 3D Model and optimized design of reversing mechanism by using Adams software, the corresponding kinematic and kinetic curves were obtained. Results The optimized results indicated that when the rotational speed of the turnover mechanism decreased by 1 rad/min, the contact force between the bullet and the spacing board was reduced by about 15 N, and the bullet radial force of the turnover mechanism was reduced by about 3N. Conclusion Reasonable reduction of the speed of the turnover mechanism as well as the contact stiffness coefficient could effectively enhance the stability of the turnover mechanism. Adams software could provide accurate prediction for the movement patterns of the multi-agency and optimized design, which provides reference for future improvements.