Annealed Neck Color OK? - Slight Copper'ish Tint

[Steve D.]

Have been roasting .223 brass on an open fire tonight, ha- ha

Used 750 Tempilaq inside several necks and run each for 3.5 - 4 seconds at the neck to shoulder angle right where a propane torch has its blue "pencil tip" in the flame. Tempilaque Melts in neck at 3.5 a 4 sec.s. Spin the shells with a little battery screwdriver (nice & light) inside a deep socket.

Getting that cool color-shift 1/4" or less down from neck, etc...

QUESTION:

After annealing I ultra sonic cleaned and dried all casings and noticed some have a little "Copper'ish" tint around the neck where other are just grayish-brass color.

Is this Light-Copper'ish look indicative of pushing the temperature Too High on these pieces? They all seem to have a pretty uniform Color-Shift at about the same area down from the shoulder.

HOW To tell physically if some are Toasted a little too much??

Eager to hear & Thanks

[jmorris]

It is easy to tell while you are annealing them, just watch the flame color.

This is a video of too much. Note the flame color change from blue to orange at the end of the cycle.

This is what you want. Blue flame color the entire time, cool enough to hold right out of the flame and even color around the case.