I sort my .223 / 5.56 brass into two types, 'LC' brass and 'Win' brass. All other head stamps are collected as trading material or scrap. I prep all my brass before I store them so that I can inspect the cases for damage and I cycle my brass in lots of 1,600 ea (pretzel keg), however, I store my prep'd brass kegs two different ways.
1st - My 'in cycle' brass keg (brass I've reloaded) is tumbled, lubed, decapped, resized, trimmed (automatically with my Dillon trimmer), and then tumbled clean. Its stored as "LC Prep'd-X Reloads" or "Win Prep'd-X Reloads" and I only have one keg of each as 'in-cycle' at a time.
2nd - My 'reserve' brass kegs are truly 'once fired' as I tumble, lube, decap, resize, trim, and tumble clean. Then I inspect for a primer crimp. If it's still there, it goes into my jugs as reserve brass. If it doesn't have a crimp, I'll reload it a single time as blasting brass and leave it at the range. Its stored as "LC Crimp'd" or "Win Crimp'd" so I know that its processed as my reserve brass that still has the crimp in it.
When I'm ready to retire my 'in-cycle' brass keg with one of my 'reserve' brass kegs, I simply swage the reserve brass and it becomes my 'in-cycle' keg. The old brass is scrapped. I keep my reserve brass with the crimp in it to ensure me that it's truly once fired.