Abstract: An experimental sub-caliber technique of 7.62 mm rifle bullet launched by a 25 mm artillery is introduced in the present paper. A bakelite sabot is employed to fit the larger diameter of artillery for firing a smaller bullet. In order to ensure a bullet impacts in good appearance, a bakelite cylinder is stick to the rear bottom of the bullet to move its centroid forward. Two impediment plates are mounted before the target plate to separate the sabot and stop the sabot fragments, respectively.