Aim To study the prescription of binder for the caseless ammunition. Methods The mechanical property of caseless ammunition of different viscosity PVB PNP and plasiticizer has been tested by compression. Morphology of impact and compression fractured was used to analyze the process of destruction of binding structure. Results According to the result of compression and SEM watching
the composition of binder in caseless ammunition was preliminarily determined and the test result of compression was explained from micromorphology. Conclusion The rationality of binder prescription has been verified.