Any harm in annealing brass twice?

[SDHNTR]

I’ve got a bag of fired brass that I can’t remember if I annealed or not. If not, is there any harm in doing it twice? You can’t over anneal by doing it several times, as long as it doesn’t exceed temperature, right?

 

[parshal]

AMP had a video about that. Annealing cases more than once, as long as it's not still hot on the second go, doesn't do anything negative.

 

[JGRaider]

Erik Cortina shows that even over annealing doesn't matter as much as most people believe.

 

[Osteodoc08]

You can anneal again if there is concern. I'd probably just load and go if not a competition target rifle.

 

[AkMtnRunner]

Any form of annealing that isn't harming the brass once, will not harm it twice.

 

[RayF]

Parshal nailed it. The flame color tells you when you’re done. When I forget if my batch was annealed or not, I run them at a faster spin rate. If the flame turns orange quickly, chances are they’re already done once. I always sacrifice one or two to get the time right. I believe its important for them all to receive the same burn and same number of annealing runs.