No Conspiracy : )
I don't deal in these actions at all. I build short action calibers mostly. I spoke with Daryle and hope to speak to Josh again soon. Learned a lot about the EX actions. I will do my best to help. I hope I explain this correctly as these are not my actions and have never seen or touched one personally. Again, I am just trying to help.
The bolt handles are threaded on, the marks on the machined part of the handle are the threads themselves showing through. This was the way they did bolts in the EX that were not to be Melanited. At first glance, my though was a bad weld : ) Daryle at BAT offered to remove the handle, put on a welded handle and even Melanite it if Josh would like.
The Bolt Faces are Milled on the EX that is why the pattern. And on some of the EX actions the threads are milled and cut with multiple teeth spinning cutter. I guess it can leave a chatter like appearance. That is why I don't see them on the BTA's. Or it could be slight chatter. They have done them both ways. I am not an expert on their process, I am only passing along what we talked about.
Lastly, I will be speaking with Josh to try and help in any way possible to make this right the way he would want it. I do remember shooting with him many years ago. So if I can help, I will. Give a call when you get a chance to talk Josh.
Thanks,
Jamie