Abstract: A stackable tray device and system is constructed for retaining substantially cylindrical objects, such as cylindrical cartridges of ammunition, and generally comprises upper and lower sections that have perimeter dimensions of unequal value, which provide for a means of stacking or nesting two such configured trays in adjacent arrangement to each other in a stable manner, the upper section of the stackable tray being configured with a plurality of cells, each sized to receive a substantially cylindrical member, and the cell being structured to retain the cylindrical member in a substantially stable upright, or vertical, position within the cell.