A PH find who is in the States for the shows is in need of a replacement bolt for an original 333 Jeffery on an Oberndorf action. At this point, this is all the info I have. Any advice will be greatly appreciated.

Best case scenario:

333 Jeffery built on Standard milsurp Action..... relatively easy fix with plenty of bolts to be had.

Worst case scenario:

333 Jeffery built on a original Magnum Mauser action, this is going to be difficult to source

In either event you will have to have the bolt face opened to 404 Jeffery base dimension !