Aim\ To study the theory and technique on improving initial velocity of tube weapon. Methods\ According to the principle of gun dynamics
correct inferences can be drawn and the launching technology of gun at present were compared and evaluated. Results Several limitations of velocity about initial velocity were established. From the point of view of propellant and propelling charge
measures for increasing initial velocity of gun have been put forward. Conclusion\ All theoretical results and the relative technical way are actual available for the study of gun.