doubleh
Member
And then there is this: https://bisonballistics.com/articles/the-science-of-cartridge-brass-annealing.
Either way why use an hour chart for an annealing cycle that's only going to last seconds?Did we read the same article? I found no mention of time except he used a 1 hour chart because that was all he had. All I can say is I have used his method for years and it has worked for me. It cured my neck splits.. Now all I have to watch for is loose primer pockets.
When 750 Tempilaq inside the neck disappears plus a count of three.....
A completely separate and unrelated issue to annealing a cartridge case. An under-annealed case may fail, but it will not be catastrophic. It is difficult to over-anneal it, unless you are willfully ignorant. You will know when it is over-annealed as you will have little to no neck tension, and may even be crushing shoulders. If the case is capable of holding a bullet when you try to pull it out with your fingers, it isn't over-annealed to the point of danger, even if the neck was fully glowing when it came out of the flame.For the folks here that advocate dark rooms and eyeball'd color....
I do really suggest looking up low-numbered Springfields.
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End effect (catastrophic failure vs ruined article) is not the issue.A completely separate and unrelated issue
A completely separate and unrelated issue to annealing a cartridge case. An under-annealed case may fail, but it will not be catastrophic. It is difficult to over-anneal it, unless you are willfully ignorant. You will know when it is over-annealed as you will have little to no neck tension, and may even be crushing shoulders. If the case is capable of holding a bullet when you try to pull it out with your fingers, it isn't over-annealed to the point of danger, even if the neck was fully glowing when it came out of the flame.
You say it's not possible but black smith's who discovered how to make steel have been doing exactly that for at least a thousand years....End effect (catastrophic failure vs ruined article) is not the issue.
I'm afraid it is an an exact analogy, however, in using ambient lighting
and the human eyeball to subjectively judge pyrometric conditions.
I don't be believe anyone has proffered catastrophic failure if/when only the shoulder neck is involved....never had a case "catastrophically fail".
If only wishes were horses...black smith's...
So you are saying black smith's can't heat treat steel? Well what they do must just be magic then. Which is an explanation I find acceptable.If only wishes were horses...
I should have said buckled as opposed to crushed. Seating a flat based bullet on an over-annealed case that has not been expanded with a mandrel will almost always result in the shoulder buckling rather than the bullet entering the neck. Even a boattail will do this if the case is truly over-annealed.Crushed shoulder is too much lube. Almost all the crushed shoulders I get are 30-30 and I don't anneal my 30-30 brass.
Obviously. That's why I anneal then FL size and expand.I should have said buckled as opposed to crushed. Seating a flat based bullet on an over-annealed case that has not been expanded with a mandrel will almost always result in the shoulder buckling rather than the bullet entering the neck. Even a boattail will do this if the case is truly over-annealed.
Absolutely.To fully give the Devil his possible due....
Does brass react differently when heated by "clean" induction to cherry red...
vs heated by direct flame impingement to the same temp/color effect ?
Here's a video done by Erik Cortina a couple of years ago where he purposely over annealed cases and tested them for shoulder bump and seating pressure. The last 5 minutes of the video is the seating pressure. Interesting test in showing if you over anneal a little bit, it may not ruin the brass.
It should be noted that this kind of childish behavior and condescending aggression is how everyone on my ignore list got there.Worshippers of the false chart.