I've been loading 9mm with bullets bought from Midway(repacked into 100 bullet boxes). Yesterday I discovered that with some careful packing, I can fit 100 rounds of loaded 9mm into the boxes in which the bullets were packaged. Good heavy cardboard boxes with fitted lids. Plenty of space to write the load data and date before giving them a wrap of clear packing tape. Almost sprained my elbow patting myself on the back. :D