I gave their blurb a quick read. I pulled this excerpt:
At RCC Brass® we have taken those variables out of the manufacturing process as we have our C272 cartridge brass hammer-forged into a tight molecular grain structure with high tensile strength, high yield strength, and 15% malleability. We machine all our cases on CNC lathes and mills and our case weight, case volume, and our case concentricity are the best available in the industry. We do not anneal the case head as it is hammer forged to a high tensile strength which gives us the same hardness for each case.
It seems to me the manufacturing process includes a cold working step to accentuate the material properties. So the cases are not simply machined out of "soft" blanks.
They also mention using an alloy different than the industry standard cartridge brass, a stronger/tougher alloy then the conventional manufacturing process can handle.
Caveat: I've never touched a piece of their brass, I'm simply reporting what I read.
