Abstract: A device for limiting, controlling and disposing leached lead. Shooting is made through an elastic layer, providing a watertight cover which closes after the passage of a projectile, the latter subsequently being arrested in a projectile-arresting material kept in an enclosed space created by a watertight layer. Precepition water penetrating the minimal projection penetrating holes is drained via the arresting material, along the inclined insides of the watertight layer, down to a lowermost point where the water is collected by a drainage line. The drainage water is discharged through a pipe to a closed reservoir or to a filter.