Now, not often enough before, I document the alloy, the mold and weight of the cast bullets on a business card.  The card follows through the loading and shooting process so at the end I can make a 3x5 card with all the data to replicate it if it works well.

What do y'all do?

I put all the data on my development targets including temp. conditions etc.etc.etc.so I can actually see the differences and then visually compare one group of test with another. I found words like shoots great if used more than once ended up not having any real meaning but side to comparisons say allot. But I also when testing will shoot at least ten, ten shot 200yd. targets for each test and I look for consistency and not just good groups and one can run out of remarks to note for each in a real hurry if not having them on the actual targets shot to continually review. 
Nice looking bullets CW but aren't concerned about stacking them up like that and incurring some slight damge that could end up to be a bit miss-leading when you shoot them. 

JLouis

I keep my alloy temps consistent for each mold and bullet weight along with the casting temp for the mold.  Most usually come out with +/- .2 gr.  My culls are usually +/- .3 gr. 

I would not worry about piled bullets for making fixed ammo, but I would not transport them that way.  I knew a fellow who was a very good small bore shooter but he transported his CF bullets in a can bouncing around in the back of his truck    Another friend gave him some good bullets to shoot and he improved immensely. 

CW a bit off topic but if you might also want to keep track of how many bullets you put down your rifles barrel just simply keep your empty primer boxes it's the easiest way I have found to keep track.
What Alloy are the bullets pictured they sure are filled out real nicely and I truly admire your enthusiasm. I have always enjoyed testing it gives one a good excuse to get out and shoot allot and to also learn allot. Also always liked try things out of the box to see what might be found. The latest was in regards to powder and experimenting with LT-30 in my 28-35SS of which has been quite interesting but I still have a ways to go when I am up to getting back to it. But so far I have shot some extremely nice 200yd.10 shot groups with it using 1-16 alloy and breech seated bullets. Only real down side so far has been the price of the powder and the powder charge being quite bit more than typical and thus costing a bit more to use. The upside accuracy has been real good, recoil more of nice soft push than snappy thus providing less rifle disturbance in the bags. 
Also one of the best alloys I found containing antimony back when I was doing various alloy testing ended being 50% 1-20 and 50% Linotype and something you too might want try some day. Hopefully it might work as well for you as it did me and also while using breech seated bullets. 

JLouis

7mm International Rimmed (sort of a 30-30 necked down to 7mm) is in the plans for developing loads this spring - in hopes of being good enough for prairie dogs.   Hmmmm.  16:1 is easy to do, but I already have a few hundred cast at 20:1