This subject has been brought up here on this forum in the past & ran into many "Heated" pages. The Vast Majority of "US" were violently opposed to the idea. The big problem here is unless any gun sold was proofed to SAAMI specs for the shells the Average consumer is going to buy the proof law would be virtually meaningless. Personally I am quite content to load for my 100 yr old guns to a lower pressure & don't want them subjected to a proof to handle SAAMI spec shells. The US companies have been doing quite well for many, many years handling their own proofing without any Government Interference & have built some of the sturdiest guns available anywhere. In short it is a subject best Dropped.
Note well, you never see any warnings concerning firing British or other European shells in US guns, its always the other way around & all their guns have been subject to proof laws since the Dark Ages.
