I would imagine that working with a soft blank, I could gen up a neck bushing die, to be suitably heat treated afterward (are you listening tex n cal ?) I hesitate to try and do initial case forming with a set up like that.
GTC
so a stick of, say A-2 tool steel 1.25" dia would work? After machining - Austentitize in stainless foil, air cool, Harden & double temper to Rc 56-60?
I think someone once told me most commercial dies are made of A-2, as it changes dims very little in hardening.
I could likely round up the material pretty easily, though I'd have to farm out the heat treat.
There are a lot of dies made from A-2 but almost NO reloading dies. A-2 is a very expensive tool steel and is not used for that reason. Almost all dies are made from leaded steel or similar and case hardened.
I have used A-2 when I can get suitable scraps and it is great stuff!! Because of its high chrome content it air hardens nicely.
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