the effect of your proposal is the same as gun control. It restricts the lawful, and requires not only gun registration, but ammunition (a disposable commodity!) registration, as well.
Presumably, making your own ammo would become illegal (as well as sharing ammo with friends). This wouldn't stop it from occurring, though, for unlawful purposes - heck, it would probably CREATE a black market in unregistered ammo. In other words, criminals would still have guns and ammunition, while lawful citizens would be restricted and inconvenienced - effectively, punished for obeying the law.
'Ammo control' is just like gun control, AFAICS. Further, it depends on the registration of every gun in the country - which is just a precursor to taking them away. Gun 'control'.
I am all for dire punishment of crimes committed with guns, but taking away guns (which is what ammo restriction would do) from law-abiding citizens isn't going to help. Taking away a specific component of a gun (the ammunition required to keep a gun from just being a conversation piece) is the same - and I can't trust our government to stop with 'simple' registration/traceability of ammunition (even if it DID manage to stomp out those that load thier own ammo, and - for the first time ever - kill a black-market) - after all, that wouldn't PREVENT crimes committed with guns.