You said, "Bullet Storage"......
Not being picky...... BUT.... there's a whole world of difference between how I store bullets (in their original factory boxes, or in dollar store plastic boxes when they are my own cast bullets) and how I store assembled cartridges.
The assembled rounds used to go into plastic ammo boxes that I was buying. Now, I scrounge the original factory boxes at the range. People often leave their brass behind. Wonder where the boxes go? Check the trash barrel and dumpster. I have 1 1/2 55 gallon barrels full of empty factory boxes from the range. 9mm's, .40's, 38 specials, 44 magnums, etc, etc, etc, etc..... I haven't bought one of the plastic boxes from the on-lines places for ages.
As others have mentioned, you might also store the assembled ammo in bulk (although not my favorite way, especially if the bulk contains several LOTS worth of effort.)
I like to mark every lot of ammo I make with all the pertinent data. Putting 1,000 rounds of 9mm into a 50 cal box, made over a period of weeks, in ten different sessions, isn't documented well enough for my liking, but others seem to do a lot of that. You can get a LOT of ammo even in one of the skinnier .30 cal boxes.