The launching device of 105 mm short tube gun was designed to carry out the armor piercing projectile test under dynamic shooting condition. Transient pressure measurement system and high-speed camera were used in the experiment to obtain the chamber pressure and projectile motion parameters during the engraving process. The engraving resistance characteristic curves of projectile were calculated by projectile dynamics equation. Besides， the influence of different pressure rise rate on the process of projectile engraving was analyzed under two conditions. Based on the test conditions， the engraving deformation process of nylon belt of armor piercing projectile was numerically simulated by using the C-S model with elastic-plastic large deformation of belt material. The experimental data indicated that the engraving resistance increases first and then decreases with the engraving displacement in the engraving process. Therefore， when the engraving resistance reaches the maximum， only part of the nylon belt was completely squeezed. The elasticity of the nylon elastic band increases the contact area with the groove. When the average pressure rise rate of projectile bottom increases from 2.92 MPa·ms^-1 to 3.28 MPa·ms^-1， the engraving time shortens by 4.36% and the maximum engraving resistance increases by 5.12%. The nylon belt cross deformation stress cloud diagram was obtained by the numerical calculation to show that the elastic-plastic deformation of the nylon belt occurred. The interior of the elastic belt is mainly in the state of compression shearing and the main failure form of the elastic belt is tensile shearing failure. The displacement curves obtained by simulation and experiment have the same trend and the error is 5.24%.