Yep, the usual two effects of 'gun control'. It only hampers law- abiding people while criminals simply do not care what the rules are, how many there are, or how severe the punishment.
Right now, we have a bill working its way through Congress for all- states to recognize all other states' carry permits. Some believe this will greatly increase gun crime. But if anyone, no matter his / her political leanings, stops and thinks about this for a few minutes, how can that possibly be the case? Is a gang- banger from the south side of Chicago really going to go to, say, Virginia, get a carry permit, and then use it in Chicago (Illinois)? Really? Of course not- that gang member will carry a firearm no matter what the penalties and under no circumstances is going to actually LEGALLY APPLY anywhere at all for a CARRY PERMIT!
In fact, isolating groups, CCP holders are some of the least likely people to even become involved in any type of firearm incident, never mind actual commit a crime.
So this ammunition law in CA will have the usual effects; no impact on criminals but a royal PITA for honest, legal firearms users. Other than of course making criminals out of those who refuse to bend to such nonsense and cross the state line to buy a case of ammunition at the correct (read: not ridiculously inflated by restrictions) price and then drive it home.
Brian
Which will GREATLY inconvenience the normal, good people and have almost zero effect on the bad people. Typical USA "gun control" measures- driven by emotions and not logic/fact/reason.