One thing I have noted is that for a long number of years guns made "Specifically" to be marketed by US firms were normally given the standard proof from their country of origon. People who bought these guns were not advised to not shoot US shells in them, thus they were generrally fed a steady diet of SAAMI spec shells. Perehaps the makers felt their guns were up to the task & as we had no proof laws felt no need to go for "Special" proof. Perhaps this is why some makers guns got reputations of "Being soft". It is though I believe a fact that many guns targeted the US market without being specifically proofed for US shells. I don't know the exact date this situation chaged, but believe for some number of years now guns aimed for the US market have carried heavier proofs.
