If you wanting a weather, shock, and moisture proof storage option with a pressure valve to keep your valuable ammo safe, this is it. Comes with a data pocket in front to store load information. Box will be fully lockable if you desire. Take it with you at matches and carry from stage to stage with convenient handle or use for storage in the reloading room. Boxes can be ordered in either .30 cal casing (any short action round .243 and up) or Magnum (long action rounds through .338 lapua). The 30 cal will hold 100 and magnum 80.