When I was using a gas annealer I used 2 different temperature lacquers. The higher temp one on the shoulder neck junction and a lower temp one painted between the shoulder neck junction and the base. It's one thing to get the correct temperature at the shoulder neck junction but obviously important to not have that temperature travel too far down the case.
I used a product called Omegalaq which does exactly the same job as Tempilaq. It is also hard to source, mine came ex USA back in the days when shipping was a lot more reasonably.
You'll freak out if using an AMP induction annealer as you have to sacrifice one of your expensive cases to exstablish its annealing characteristics. Strangely, the last 2 boxes of Lapua brass I bought had 101 cases.
I stopped watching Cortina ages ago.
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