Correct, this isn’t mere casting. It is die casting, with really good surface finish (which matters for strength) and good tolerances once you iteratively take

Correct, this isn’t mere casting. It is die casting, with really good surface finish (which matters for strength) and good tolerances once you iteratively take warpage into account. And a big reason they didn’t use this in the past is you’d get bubbles which reduce strength dramatically. But improvements in process tech and ability to use X-rays to do fast, non-destructive evaluation allows near-forged material properties. Better than castings of years past.