Abstract: A container system for shells comprising an elongate tubular housing defining a chamber having an open end and a closed end with a projectile-receiving seat at the closed end. A projectile carrier encircles the base portion of a container-received projectile and extends forwardly therefrom through a projectile-surrounding support. The chamber, immediately outward of the projectile, receives a projectile case with the open end of the case inwardly directed and closed by a removable plug which presents a rearwardly opening configuration receiving the ogive of the projectile. The container system, at the open discharge end of the housing, includes a carrier surrounding the case base. All of the components are closed within the chamber by a screw cap which in turn incorporates one or more viewing windows displaying indicia designating the nature of the contents of the container. The cap indicia is varied by rotation of an indicia ring accessible only from the interior of the cap prior to a mounting of the cap.