Mtm p-100 fliptop box - MTM P-100 Fliptop Box .38 Special To .357 Magnum

These are my favorite for storing 100 rounds. You can get these in various see-thru plastics which helps for identification. This is also a good quantity to take to the range. This flip-top box is also stackable for keeping the work bench organized and if they are going on the shelf, it helps when trying to keep things neat.