I had thought about making some out of chrome moly but did not see any advantage in them because the material cost was very close and the maintenance was much more on the chrome moly
(If not cleaned often and oiled it could rust), Especially where the powder blasted the inside, the finish would not hold up
as well as the stainless.
Machining was essentially the same so with the Cerakote type of finishes, Matching is not a problem.
and matching any stainless barrel finish is easy because it is the same material.
Care and maintenance is also the same as the barrel.
Nothing wrong with the Chrome moly, just my choice.