300-whisper I just finished a build on one of these actions, Make sure your smith understands that the counter bore for the bolt nose will need to be opened up to about .760"
I chambered the barrel in 28nosler and the extractor would not cam over the rim of the case, I had the counter bore at .740" as per Mr Lyons and the extractor was hitting the counter bore and not opening up to let the case head under it. Does that make sense?
Here is the rifle all done up
View attachment 1036953
Is that a Carbon Six barrel? I'm interested in your build, going somewhere similar with my TL Technologies Action.