Different ammo requires different techniques. Yes, I have and love the .50 cal cans. But showing my broad mindedness, I also have and use .30 cal cans.

And recently I've added on another storage medium. Fiberglass milk crates, as seen in dairy's, convenience stores, and groceries. The molded plastic ones are weak and undependable, but the fiberglass (and I'm calling them that because you can actually see swirls in the plastic used to form it) ones are up to the task.
They have one attribute most other things don't. They have good handles, on all 4 sides. And they stack well because they're designed to. The only thing I put in them are the loose 550 bulk packs. The ones the guy at Wally World sold me in the original inconvenient cases are still there. Cardboard is hard to move when it weighs that much. Can't get your fingers under it. And I don't fill the milk cases all the way up, I'm more lazy these days and I let weight be my guide. And 22 shorts have a drawer all to themselves. Over 3 bricks of it don't even fill it up.
I don't reload all that many calibers these days. But stuff like 38 wadcutters, 357s, 9mm, 44 Specials and magnums all require their own .50 cal cans. Ammo goes straight from the press to a pile on the carpet. Then a final inspection step and into the huge 1 gallon zip locks before going into the ammo can.
Ammo cans sometimes weigh too much. Sometimes way too much. The plastic zip locks serve as a second moisture seal (not that I've ever had a problem) and in each baggie goes a hand written slip with crap written on it, like the load and the date loaded.
Rifle ammo also goes in .50 cal cans. I hate it when the quantity exceeds one can and I've got to label a 2nd or 3rd.
My bullets go in the card catalog. Not sure why, and I'm a little inconsistent about it. Like all the supplies for .32-20 are in one .50 cal can. But most of the bullets are just sorted by caliber.
For factory ammo and odd components I store stuff in my refugee library card catalog. You remember the ones the mean old librarian forced you to use to look up books when you were young? I've got 60 drawers that are long an work well. When I've only got a small quantity of factory loaded ammo, I just dedicate a drawer to it. Like I've got a few boxes of Gold Dot self defense ammo in 44 Special, so it gets a drawer.
The only thing I use plastic tubs on are powder and primers. Of course all powder is in its original container (I've thought about mixing it together, just for fun!)

I have no idea why I feel primers need some kind of special handling. They've been stored indoors forever. I haven't bothered to buy any in about 16 years, the last time we had a shortage and I found some for $7 a brick of 1000. So I was stupid and bought all I could get. Now I've got a lifetime supply on hand.
One criminal exception to all this. My dad died back in 1980. My mother hated guns and gun stuff, so I brought it all home. On thanksgiving day my youngest wanted some 12 gauge ammo, so we went to the garage. There, where its moved twice but still in milk crates and milk cartons and original boxes are some of my dad's reloaded shotgun shells. His hobby was reloading more than shooting. The old ammo was damp. Beyond belief. But it still fired. So the same son can have all of it. They're just going to burn it up anyhow. Dad only reloaded 7 1/2 and 8 shot. But he hunted with 5 and 6, go figure.