Re: Case anealing question - how long in the flame?
My que is when the cases fail to size properly, in other words, when the neck tension gets sloppy. I tried the torch and found no happiness. Overheating leads to brass too soft, which may cause difficulty in extracting, which may cause you to think your loads are too hot...it goes on and on. [img]images/icons/rolleyes.gif[/img] My method involves a small oil lamp and a damp rag. Roll the case as it heats, you may or may not see the color change mentioned above. When the cloth gives a satisfying hiss when you wipe the soot off, you're pretty close on temperature. They seldom get more than warm to the touch in the hand that holds them. My experience is with small to medium size cases, and I do NOT know if this method will work on the large ones common to the forum. Neck walls are thicker, circumference bigger.
More scientific methodology involves heat crayons which can be found a welding supply places. I don't know the proper temp range for them, sorry. Hornady introduced an annealing kit a few years back that may still be available. Luck.