I put the load data in the first section at the top of the Load Notes page. I suppose one could put all this into an electronic database but life is too short. Load sheets are filed in chronological order of date loaded. I also write the bullet weight pretty large in red ink in the right margin so I can flip through to review by bullet weight. In the top RH corner I write a Lot # (see below). I have a 3-ring binder for each cartridge. I use the BTB Load Notes form referred to above.