Raimey, as Mike said, you want to avoid annealing the case heads. From just below the shoulder (if the case has one) to the top of the neck is your target and as the flame spreads, you don't want to put it on the top of the case neck (to avoid overheating "burning" it) and you would not go below the shoulder. Annealing by hand that way is best done in a darkened room where you can see if you get a bright orange you have burned it. The machines like the AGS make it easy. You just set the flame from a single torch to be off the case about a quarter inch below the mouth and then set the speed of the rotation to get a nice even anneal. Only takes a minute to set up and then you can drop the brass in the hole 3 or 4 before the one that rotates in the flame as fast as the one comes out of the flame and drops.
