When doing load development, I use masking tape on the inside of the box lids.
One label says something like:
7mm-08, Varget, 140gr. Nosler Accubond, OAL=Xx.X
Below that, I use a piece of masking tape to indicate the charges.
38.5 39 39.5 40 40.5 41 41.5 42
As I shoot off each load, I tear the charge number off and stick in on my paper target where I was aiming at.
Once all loads are done, I tear off the top label with the cartride, powder type, etc and stick it on the top of the target.
After all load development is done, I use a label maker to lable my ammo case with all the information (Cartridge, powder type, powder charge, OAL, bullet type, bullet weight, velocity)