sizing too much after annealing

[Webster]

I use map. To my eyes, and how my mind works, dark red is a certain temp or cherry red is a certain temp it shouldn’t matter what fuel got it there it just got there faster. I shoot a pretty warm load in 6 creed using adg brass that lasts about 10 firings before the case starts separating at the web

Really hot loads if your regularly getting case head seperation. You may have a safety issue.