Projectile tests of a sub-ammunition model from a bomb dispenser cut loose into four sections have been done in the Laboratory. The principle and effect of the slinging and projectile device were stud?ied. Experimental devices and schemes were introduced in this paper. Many tests have been carried out. The process of action of the sub-ammunition and cutting cabin were recorded distinctly with high-speed video tape recorder and laser camera. The experimental results were handled and analyzed concisely. Veloc?ity of the sub-ammunition was obtained. It was shown that the gunpowder is in a state deflagration upon power detonation along the axis. It was also shown that the scheme is operable and the design seen to be reasonable. The result can be taken as a reference for further study of bomb dispenser.