I think that the Hornady kit furnishes 450 degree Tempilaq. When we set up a friend's two torch machine, we painted narrow stripes of 300,400,and 500 degree down the body of a test case , from the shoulder to the head. After some experimenting, it seemed that we were getting the results that we wanted, with the 500 changed a half inch down from the shoulder, on magnum cases (7mmWSM & .338 Lapua) I thik that you could use the appearance of Lapua cases as a guide on smaller cases.
A friend who was doing smaller cases (22-250 & .223) using the Hornady kit with a single torch, found that my suggestion to use an inexpensive metronome allowed an easier time reference that allowed him to more easily keep his eye on cases during the process. He used a vibratory case cleaner to polish cases before annealing so that he could more easily see the color change. After doing many cases with the timer, he got to the point where he could judge the timing by watching the color advance down the case past the shoulder.
The best article on annealing, that I have read, can be found on accurateshooter.com, if you search there.
