The problem you have spanners is you have no idea of the failure point of the action. If you don't trust the strain gauge why don't you buy a pressure transducer from oehler and use that to determine you actual pressure, then go back to barrel, action and brass mfgs and ask them if it is within its designed safe operating range.
Yes putting a transducer in all but destroys the barrel for future use but, if you want to push the limits and then sell to customers then sacrificing a barrel should not be an issue.
Bookmarks