That's nice to know. The prints I have are from JGS 06/12/2001. Interesting that the dimensions either changed or perhaps this was before the advent of the "Winchester" 7mmSM. In any case, this is the chamber He put in the gun, so, I guess it's now a wildcat.
Now that I think about it, he bought a box of 7mm WSM
cartridges to measure so we could make a drawing for the chamber and I don't remember them being visibly longer than the 300 Brass that came later. I had him get 300 brass because of the extra neck thickness from the resize process. In retrospect, the necks never got thicker so it never helped.
I'll have to investigate this more. I do know that with a turned neck, the factory rounds He bought will chamber in his gun.
If you have a fax, get me the number and I'll send ya the prints I have. See if they compare to your guns (which I guess You're saying they won't). Interesting.