If I am reading and understanding correctly, the hold didn't go through into the chamber. It's just into the barrel threads over the chamber and left a wall thickness of .138".
Correct?
Yes, that is correct. He did not go through into the chamber.
I assumed that the receiver wall is 0.144" thick. The hole, made by the gunsmith, measured from the top of the receiver is 0.3" deep. So, I figure the depth of the hole, into the barrel, is 0.3" - 0.144" = 0.156".
I also assumed that the diameter of the barrel shank is 1.062". And the diameter of chamber (.308 Win) to be 0.474". So (1.062" - 0.474")/2 = 0.294" for the chamber wall thickness.
The material between the blind hole, made by the gunsmith, and the chamber proper, would be 0.294" - 0.156" = 0.138".
If anyone sees a problem with my math or assumptions, please let me know.
Jason
