If you want to try your hand at making your own dies, maybe check these guys out to get a headstart on the process:
http://pacifictoolandgauge.com/565-p...-blanks-nopix-
$20 for a tapped / knurled die body with a pilot hole of your choice. The core swage and core seat dies are trivial. The point form requires a reamer of the desired profile of course, and those will set you back $100 or so.
Before taking that plunge, I suggest buying some O-1 tool steel scraps and practicing:
1. Drilling straight holes
2. Reaming to barely the finished diameter
3. Polishing out to the finished diameter
4. Heat treating
Once you have a process figured out, then move to a PTG die blank and start with a 0.191" diameter core swage. This is what you will use to make perfectly cylindrical cores out of 3/16" lead wire. There will be a bleed hole out he side. Mine (RCECO) uses a 0.078" (2mm or 5/64").
Next, a core seating die of 0.224" inside diameter. Should be easier than the core swage die in that there's no bleed hole. It is critical that the diameter be right and the surface mirror smooth.
I would get good at making those two dies, then splurge on a custom ground carbide reamer