I've been trying to tell folks that the low light glow red idea is a bad one for more reasons then what you linked which seems good enough for me . Glowing any shade of color is a terrible metric of measurement because it's not one , it's purely subjective that is based on a minimum of 3 or 4 variables . Like ones ability to see colors accurately , at what low light ? heat of the flame etc etc . If you want to wing it like that , wing it with timing not sight . You will end up with a much more consistent annealing job . You will need a set up that allows you to place and remove the brass at consistent timing intervals .
I've been avoiding these annealing threads as of late because everyone knows better . All I can say to that is everyone has likely read something that makes them believe they know better . I've done my own testing over the years and have come to "my own" conclusions . There is no one way , one timing , one temp , no one anything . It is all about what you are trying to accomplish with your cartridge brass . I break that down to two aspects which are 1) stress relieving and 2) consistent bullet hold/release . These can be the same thing but are not always accomplished annealing in the same way respectively .
I've been avoiding these annealing threads as of late because everyone knows better . All I can say to that is everyone has likely read something that makes them believe they know better . I've done my own testing over the years and have come to "my own" conclusions . There is no one way , one timing , one temp , no one anything . It is all about what you are trying to accomplish with your cartridge brass . I break that down to two aspects which are 1) stress relieving and 2) consistent bullet hold/release . These can be the same thing but are not always accomplished annealing in the same way respectively .