All load data stays with the cartridges. Full info including date, HS, number of times resized, crimp, bullet, charge weights, powder, primer, brass length, coal, etc is on a card taped inside the lid of the cartridge box. If doing load development, color code the primers with sharpie and include info on the card. If its a bigger bulk run going in a bag, still have the same card with info but it gets double bagged and the card is between the two bags before going into a can (no loose ammo in cans for me, has to be bagged). That way know exactly what any ammo is regardless which box or container is picked up. Not just for my self but also for anyone else who may be looking at it in the future. Beeen doing it this way since I started in late 1980's.