whoopsy!

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.
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.

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.

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.

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.

Looks like, if under 482F , no harm done?

Click to expand...

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