As I said in Marshal's NAS report thread on problems with the coding science, the verbiage calls for a penalty for possession of ammo legally purchased. No grandfather language. That is a "taking" by the government, of private property, requiring ponderous civil procedures relating to compensation for the owner's $$ loss. The lawyer-heavy Legislatures/Congress know that, and should be loath to commit resources in a legal quagmire. They have to know the lawsuits and appeals would vapor lock the courts of any State and would end up in a Federal District to resolve. Would take YEARS.
It's basicly the same procedure that ATF went through when the Secretary of the Treasury ruled that Streetsweeper shotguns were suddenly Destructive Devices and subject to NFA rules. Under Federal civil law, they had to allow about a 7 year amnesty and tax exempt registration BEFORE the criminal statute could be enforced. It was t "taking".That's my view anyway. Thanks for the lead Swifteagle.
Mac.