Just to clarify a bit, the 3rd and 4th photos are of the baffle/case holder. The second of the two show the neck holder that suspends the brass to a fixed depth in the salt bath, which is adjusted to submerge only the portion you want. I prefer the salt to cover the neck and about half the shoulder.
The 1000 degree temp really does nothing to the composition of the brass in the short time it's heated. Annealing is dependent upon time at temperature, the hotter the temp, the faster the annealing process is completed. I found this process is actually faster then using a propane torch which burns at 3600*F (1980* C)
and unlikely to overheat the brass because it heats evenly inside and out.
If you like, you can google "salt bath annealing cartridge brass" to find some good video's, or go directly to the BallisticRecreations website link provided.
Good luck and good shooting.
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