If all ammo had to be serial numbered, ammo prices would skyrocket while availability would plummet - just what gun grabbers dream of.
No it won't.
The entreprenure in me will crank up his reloading press and ship ammo into CA from my website... and CA can suck wind.
This will only effect businesses that are stupid enough to still be located in the Peoples Republic.
8 billion? That would require, mmmmmm, ten digits. Plus two for the year, I suppose. Maybe one more, to allow for production to reach ten billion.
Thirteen unique id digits. That gonna fit on a .22 short...???