whoopsy!

Discussion in 'Handloading and Reloading' started by tightgroup tiger, Mar 31, 2019.

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  1. tightgroup tiger

    tightgroup tiger Member

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    Forgot to turn off my infered heater last night that I dry my brass with and got some a little warm. These were under the heater for 18 hrs.
    Look how it looks like it annealed the brass only at the mouth.
    Weird!
    I would have though the heat would have been drawn toward the thick end of the case.

    It only affected the brass out where it is thin.
    The head looks as normal as can be on these.
    I took one in and resized it without lube and it resized nice, like new brass.

    I bought this old Winchester brass in the 1980s and I've been drying my brass this way for probably over 20 years I can't remember ever seeing a split case on any of these.
    I wonder if this is why.
    Probably just my imagination. case dryer.jpg
    This is what I pulled out this morning.
    Guess it's time to buy a 20 amp timer with multible outlets so I can plug in my tumblers also.
    By the way I clear the bench off around the heater when I'm running it.
    well dried brass.jpg
    I doubt it ruined the brass, just annealed it some. Some of my 9mm brass turn colors a little at the mouth every time I dry them. As long as the case head didn't change color.
    Pretty shades of blue out at the mouth.
     
  2. nevadabob

    nevadabob Member

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    I have a matte blue Taurus 85 these would look good in!:)
     
  3. 243winxb

    243winxb Member

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    Toast imo
     
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  4. tightgroup tiger

    tightgroup tiger Member

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    LOL, Yea, I just put some temp strips in the pan under my heater and turned it on. Didn't make it to 290 degrees.
    I will have to buy some in the range that I'm missing and nail this down as to what temp it is actually running at with the height I set my pans at.
    The white strip only goes to 175 degrees. It's hard to see.
    temp of brass.jpg
     
  5. 243winxb

    243winxb Member

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    Temp vs time factor?
     
  6. tightgroup tiger

    tightgroup tiger Member

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    That's what I'm wondering. Inferred heat, I can't imagine. No studies that I'm aware of for annealing pistol cases that I've ever seen. Most people shoot them till they split.
    Mine just don't seem to split though.
    Oh well. Just something I just realized this morning after seeing these.
     
  7. LiveLife

    LiveLife Member

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    Or you are onto something new.

    When I reloaded in the 90s, I would occasionally get split cases in 9mm/40S&W/45ACP.

    In the past 10 years, I can't hardly recall ever getting a split case from various powder loads I have used which have been same/comparable for decades. Coincidentally about the same time, I started using NuFinish liquid polish with my walnut media which preserved brass from tarnishing for years (and I have used walnut media since the 90s).
     
  8. 243winxb

    243winxb Member

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    Annealing- Factors Affecting the Annealing Process
    482-572°F for Relieving Stress - time makes a difference. Between 30 minutes to 1 hour maximum.

    Looks like, if under 482F , no harm done?
     
    Last edited: Mar 31, 2019
  9. tightgroup tiger

    tightgroup tiger Member

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    I hope so, I kind of banking on that. I just loaded them back up.
     
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