The loading of an artillery projectile aims to shrink the shell into the gun barrel to ensure good positioning before firing. This shrinking fit assembly is made possible by the driving band attached to the projectile. This band is made of softer metal than the one of the barrel. Most of the simulations for projectile/gun barrel interaction focus on the interior ballistics’ phenomena after the ignition of powder [1]. Major simulations on the loading of artillery and tank shells were made by Balla [2]. This work aims to go further by focusing on understanding the assembly made by the projectile and barrel while properly loaded through analysis of the behaviour of the driving band during finite elements simulation. An axisymmetric view of the band can be seen in Figure 1. The simulated assembly is an elastic-plastic copper made driving band shrinked between an indeformable cone illustrating the barrel and the rigid projectile body. We simulate the three static phases of the assembly: penetration, springback and extraction. During each phase, we track the macroscopic variables of the assembly (displacements, external forces, interaction forces, …) and the local variables (pressure, surface, …) at the interface between barrel and the driving band. At the macroscopic scale, we observed that the extraction force is always smaller that the penetration force. Moreover, the springback has a significant effect on the performance of the assembly especially on the normal force. Therefore, a comprehension of the assembly through shrinking table only is not sufficient. At the local scale, we observe a heterogenous distribution of the normal force along the contact that evolves during the three phases. This distribution is heavily impacted by the shape and material of the band.