I am using a new method for case annealing.
Which, despite not being so fast gives me good results.
I use a tubular electrical resistance, the diameter of the tube is 8.5 mm. I connect the 2500 w resistor to electric current and then I introduce the brass to the beginning of the shoulder, leave for 6 seconds and take out ..
It is a method where each type of gauge needs a different resistance diameter, but it is a clean method and does not pollute.