Rafsob,
http://www.gun-tests.com/performance/jun96cases.html
In closing, annealinghas a narrow window, in the demonstration 'crayola' is used below the neck to indicate 650 Deg. F., if 'crayola' was used on the neck 660 Deg. F would be used. Annealing brass cases is about heat, time and travel, if annealinghas a criteria, how many of the elements are met in the demonstration/illustration?
"TEMPILSTIK" is a brand of 'crayola' for determining temperature.
F. Guffey