Hdwhit,
I have messed with a couple sets of common dies that produce nearly perfect SAAMI spec brass/rounds from Milbrass, without sizing the body, then the shoulder, then the neck in three different processes.
They even fit the Ruger American with it's 'Tight' chamber.
They also shoot pretty good, on par with factory 'Premium' ammo.
It wasn't as easy as it sounds, most common multi function dies are hogged out and the one thing you CAN'T do is put metal back in...
Since brass is abrasive, dies wear, so I'm often tinkering with new sets as I'm using currently finished sets.
Dillon dies come pretty close, available, but they are a long way from 'Common' or cheap.
I'd love to get my hands on a CNC wire EDM and crank out some solid carbide dies!
I tried cutting EDM blanks and finishing carbide dies but never got it exactly right...
My EDM is mostly shop made and isn't as accurate as it needs to be.
I can't seem to get die makers to produce a die to my specification no matter how much I pay them.
Seems they always think they know what I 'Want' over the specifications I send them...
I might try again now that most carbide cutters are using CNC EDM now that I have specifications that work 99.999% of the time on milbrass (made since 2012) and I have inspection equipment that can detect/reject a coat of was on the brass without handling every single piece... (Brain numbing work!)
I won't really give it away, but I've been using roller dies to shape shoulder/necks, getting nice, crisp bends back, and precise Datum length. Thinking of producing it if I can simplify it a little more, getting costs down.
Would be great for high volume processers, just have to figure out how to get it working in a common self indexing progressive press.
Probably another idea that will never see outside sales, but so far it's working for me.