A projectile recovery chamber for stopping and trapping projectiles fired by a firearm, wherein the chamber comprises a modular cylindrical body, a means for retaining fired projectiles, a projectile recovery system, means for adjusting the height of the cylindrical body at the front end thereof, a control panel, a weapon-positioning system, a basket for trapping the shells of the fired projectiles, means for moving the chamber, characterized in that the means for retaining the fired projectiles is a gel with rheopectic properties and in that the chamber has a pump that has a basket-type filter coupled to a hydraulic system that extracts the fluid from the chamber and returns it, generating a constant high force.