I did not miss the point at all. Why however would anyone even consider a government law requiring a gun to be proofed or reproofed if they do not know what it pertains to?
Larry's point about a 19,000+ PSI proof load is based on fact. That is what US made 12 gauge guns are proofed at under SAAMI (reference: ANSI/SAAMI Z299.2-1992). If one wants to shoot a steady diet of 11,500 psi maximum mean loads (12 gauge) then they should be sure that a the gun will withstand a proof load. If not, then that person would be safest to shoot lower pressure loads. Passing a proof load test will ensure the gun is strong enough to survive SOME reloading mistakes, a little mud in the muzzle, perhaps a stuck base wad and so on. A little extra strength is usually a good thing.
About a US law concerning proofing guns, forget it! What agency would do it? Eric Holder's BATF might decide to blow up 20% of all guns that are sent to be proofed... It could happen. Let's keep things as they are.
Mark
