Good Morning,
I have some 225 Winchester brass that was formed to 7mm Merrill about 30 years ago. I am trying to re-form it to 6.5 JDJ. I have annealed the cases using a LP torch spinning with my fingers for about 8 to 12 seconds each then water quenching, but that did not seem to work; still very brittle. I am getting complete neck separation when pulling the brass back through the 6.5 JDJ die (it seems to go up okay with less resistance). I have tried Imperial die wax and homebrew alcohol/lanolin lube to no avail. Should I anneal progressively longer and see if that works? Or is there a point where old brass just won't form due to age. I am not sure how many times this brass has been shot in the past. New 225 Winchester is hard to find and trying to salvage this old brass seems like the thing to do.
Thanks for your time.