Ah, yes...
I use the 100 round boxes for my 'formal' target ammunition - for Bullseye and PPC competition. For High Power Rifle, I have 50 round boxes for .308 Win. It's easy to see I have the proper load out of ammunition for a specific match.
For other shooting, I bulk pack ammo in plastic storage containers I find at the Dollar store. However, you want to buy a pile of them all the same, that way they stack neatly.
For component storage I use ammo cans. For some calibers I shoot (.22-250, .257 Roberts and .32-20) all my brass and bullets will fit into one .50 caliber ammo can. For my 'bulk' calibers, (.38 Special, .45 ACP, .30 Carbine, .308 Win) I use .50 or .30 caliber ammo cans with brass sorted by headstamp. I also have one fuse can full of mixed commercial 9x19 brass. Similarly, I keep jacketed rifle bullets in original boxes, and keep those together in an ammo can of suitable size. All the .30 caliber bullets in one, and so on. I buy .38 caliber 148 grains HBWC and .452 caliber 185-200 grain SWC bullets in bulk; they go in individual cans.
I buy self sticking labels and use my computer (or a magic marker) to label the cans.
For storage of ammo or components, I suggest Gorilla Rack.
http://www.gorillarack.com/
They are easy to assemble, beastly strong and modular - so one can build them up as needed for number of shelves and shelf height. Okay, they are a bit more expensive than the plastic shelves one finds at the hardware store - they are brute strong and stable. And they last. And, one can fasten them to the studs in the wall for added stability. If one is really motivated, one can add studs and doors to the front and make a cabinet arrangement out of it.
My last reloading room I attempted to build conventional shelving. You know, those little stamped metal 'L' brackets and pine boards? No, no. Trust your uncle Archie on this one; Gorilla Rack.
No; I have no financial interest in the company.
I don't mind being stupid; I've gotten used to the idea. But I hate
looking stupid.