All the 9 and 45 I load goes into the clear plastic 50 round cases, and when all my cases are full, I fill up the trays from commercial ammo.

In each case or tray, I have a little slip of paper with the date, bullet brand/type/weight, powder brand, powder charge weight and OAL.

So my last slips for my 45acp rounds have
10/23
CFE 6.2gr
Xtreme 230gr HP 1.250

I was originally loading my 230gr HP to 1.230, but had a few feed issues so I moved them out to 1.250 and found they ran fine.
Now I can tell when I'm grabbing a case what length it was loaded to (so I can grab the longer ones for idpa or pin shoots, but use the shorter ones for range plinking)

I also have a spreadsheet that I update after each reloading session that contains:

Date, # of rounds, caliber, bullet brand/type/weight, powder brand, powder charge weight, OAL and then a column that is a formula of # of rounds times the charge weight. I also note on the spreadsheet when I start on a new can of powder.

I've always used the same primers, so I don't log that, but if I end up changing primers at some point, i'll add that to the spreadsheet as well.