There was an interesting podcast with a designer at KRG suppressors recently - He gave a shout out and talked about how thunderbeast cans have earned their reputation for accuracy (versus other brands) because they hold 3 thou concentricity through the baffle stack on the port opening.
That’s pretty impressive for something 9 inches long and not a solid piece you could use a big boring bar on (probably).
He didn’t say it, but he implied other manufacturers, including theirs can’t do that well.
Others can as well. Whether they do or not is the question, but any of them that uses a wire EDM to bring the bore to finished size after assembly is achieving a similar runout.