There are no "good" storage methods I've run across. The problem seems to be complicated because there are so many different calibers and bullet weights. Those of us who are also reloaders even have a worse problem.
Mine is terrible because sometimes I feel really disorganized. I've taken steps to make it better, but usually it doesn't really help. Over the years I've accumulated a bunch of ammo cans. Again, no real system. Some contain factory ammo still in the box. Others contain bulk reloads. Still others have bulk reloads, but big ziplocks separating reloading lots, or bullet weights.
One of my attempts from the 1990s was a library card catalog. The old fashioned ones made from 1" maple. Gawd was that thing heavy. Yes, I hired movers for the thing. Its best for unloaded bullets or odd ball ammo. Its even fairly easy to label because they provide little slots for cards. And pull out shelves to sit things on. Thick and heavy enough (remember the 1" thing).
And then there are the piles. Some dumped on the desk in that room. And over on the bench/table are the .32-20 rounds in a cigar box, and the bag of virgin brass on top of the cigar box. And the lost stuff. A cigar box I can picture in my mind, but not find. A big Ibold cigar box full of cast 500 grain .45-70 slugs, all nicely lubed up with messy grease. Oh, and the antique 22s in some boxes with ratty old prewar Outdoorsman and Masterpices.
I've considered just dumping stuff on the floor and using a shovel to scoop it up when wanted. Oh and primers, all neatly in the original boxes in a semi see-thru storage tub. No one has asked me if I think I have enough, but thats only because the gun room is restricted. No one goes there except me. Wife is correctly scared of the place. Too much risk of a trash slide. But I have a plan. Not a good one, but its a plan. I'm just too tired to implement it.