Documentation makes me too anal. I feel that that sort of regimentation has a tendency to urge me toward doing things for the sake of doing them; for appearance sake, rather than actual need.
I use plastic bags for loaded ammo/fired cases, with Stick-Up notes inside listing the load spec and notes like "charge increase .2gr", intended rifle, etc.. A lot of my ammo is slotted onto stripper/enbloc clips inside the bags (even when the firearm does not use the clips), to keep them neat, compact, and to permit quick indications of quantities.
Records about discontinued loads, etc., have minimal value to me. Stick-Ups with good loads get stapled to the Plywood wall behind the load bench.
Each batch of brass tends to test functionally identical within the group regarding neck tension as it runs down through the cycles, and after testing a few and adjusting the die to get the right tension, I'm pretty much done with testing for that loading cycle.
Greg