Why? Because the Mauser is a very similar, bolt action rifle that obviously does not suffer from your "Inherent Weakness". And I re-load for both with similar powder charges.
My .308 converted LE No. 5 is proofed for .308 Win. The otherwise unmarked receiver was proofed in Britain(where it was clearly used regularly) and again in Germany
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As Laidlercorrectly observed, the pin holding the rear sight bolt was damaged (I bent it ... and then lost it while fitting a Parker Hale rear sight).
But strangely enough, the rifle has neither shown any sign of "Wandering Zero" ... nor your dreaded " Inherent Weakness" syndrome .
I asked for your advice, as I am forced to respect your superior knowledge in all things ballistic (although NOT in regards to statistics or military history).
Please let me know what measures I should take to ensure that both rifles conform to your latest health and safety requirement.