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  • Rainbow color when annealing

    Posted by james on November 8, 2021 at 11:54 pm

    I have recently been annealing my .308 Win brass with a small propane torch and my brass is turning a rainbow color, I must add I’m quite new to annealing my brass. I’m wondering is this okay?

    james replied 9 months ago 2 Members · 6 Replies
  • 6 Replies
  • jeffninjaslayer

    November 8, 2021 at 11:54 pm

    That’s because your brass is LGBTQ+. Nothing wrong with it, you just won’t be able to shoot straight.

  • TexPatriot68

    November 8, 2021 at 11:54 pm

    I found Erik Cortina’s videos on YouTube very helpful. I just finished my first large batch (100 is large to me) of 223. I think I did it right, but I am using range brass and plinking loads to test my work.

    My new 6mm CM Lapua brass is a long way from seeing my Annealeze contraption (I don’t like it – BTW).

  • 101stjetmech

    November 8, 2021 at 11:54 pm

    If you use tempilaq, I’d recommend using the 600F.

    We use templaq when checking oven temp for heat treating/artificially aging aluminum aircraft parts. That’s what it was originally made for, use in ovens where the temp change occurs relatively slowly.

    If you use the 750F commonly referenced for annealing brass, by the time you see the tempilaq turn clear, you’ve probably overshot your target temp by 100 degrees or so, using a propane torch. It only takes about 6 or 7 seconds under the torch to anneal a case.

  • pepperonihotdog

    November 8, 2021 at 11:54 pm

    Too much. 8 or 9 seconds depending on how close to the flame you are.

  • jenkins1967

    November 8, 2021 at 11:54 pm

    Why are you doing this? Without a lot of knowledge, I suspect you’re just going to ruin good brass.

  • marcuccione

    November 8, 2021 at 11:54 pm

    They make a product called tempilac. Not sure how it’s spelled. I don’t anneal as I find it unnecessary, especially for range pick up.

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