I suppose you could certainly need more than 10 rounds if you are a terrible hunter. :P
Also, for the record, even though it was linked earlier, it looks like we need the existing
California assault weapons bill up again.
Notwithstanding Section 30510, "assault weapon" also
means any of the following:
(1) A semiautomatic, centerfire rifle that has the capacity to
accept a detachable magazine and any one of the following:
(A) A pistol grip that protrudes conspicuously beneath the action
of the weapon.
(B) A thumbhole stock.
(C) A folding or telescoping stock.
(D) A grenade launcher or flare launcher.
(E) A flash suppressor.
(F) A forward pistol grip.
(2) A semiautomatic, centerfire rifle that has a fixed magazine
with the capacity to accept more than 10 rounds.
(3) A semiautomatic, centerfire rifle that has an overall length
of less than 30 inches.
(4) A semiautomatic pistol that has the capacity to accept a
detachable magazine and any one of the following:
(A) A threaded barrel, capable of accepting a flash suppressor,
forward handgrip, or silencer.
(B) A second handgrip.
(C) A shroud that is attached to, or partially or completely
encircles, the barrel that allows the bearer to fire the weapon
without burning the bearer's hand, except a slide that encloses the
barrel.
(D) The capacity to accept a detachable magazine at some location
outside of the pistol grip.
(5) A semiautomatic pistol with a fixed magazine that has the
capacity to accept more than 10 rounds.
(6) A semiautomatic shotgun that has both of the following:
(A) A folding or telescoping stock.
(B) A pistol grip that protrudes conspicuously beneath the action
of the weapon, thumbhole stock, or vertical handgrip.
(7) A semiautomatic shotgun that has the ability to accept a
detachable magazine.
(8) Any shotgun with a revolving cylinder.
The bits really relevant to Senate Bill 249 have been highlighted. Currently, people have been using "bullet buttons" to circumvent the detachable magazine bit, because it requires a "tool" to detach your magazine (just a bullet). Senate Bill 249 will simply outlaw bullet buttons. People will immediately use rifle grips on their AR-15's instead of pistol grips. They also can't have things like a foregrip or flash suppressor in California, pejoratively referred to by California gun enthusiasts as "evil parts", because they make your gun illegal without actually changing its functionality.
A standard AR-15: This one has a pistol grip
A California "Featureless" AR-15: I think this one actually has an "evil" flash suppressor, funny enough it's OK to have a rifle silencer though. But the important part is that the grip is different.
See for comparison the Ruger 10-22: This fires every time you squeeze the trigger just like the AR-15, it's functionally very similar* (IE; you only care the difference if you're actually using it, not if you're worried about being on the other end of it). It's fine because it has no "evil" features common to the AR-15 such as a pistol grip. If however you attached a foregrip to it, suddenly it becomes "evil" and illegal in California. But I digress.
(I'm pretty sure the Ruger shown here is not controversial because it is not colored black, frankly.)
Keep in mind, the "bullet button" AR-15's are considered fixed magazine and may only have 10 rounds. However, the funny-grip AR-15's have a detachable magazine which usually have 30 rounds- but if somebody invented a 100-round barrel mag for them, I'm pretty sure that would be legal too.
Now, think: Exactly what does SB249 accomplish? Certainly nothing to do with most of the debate going on in this thread.
*The Ruger pictured is actually a rimfire rifle, before someone calls me on it. There are centerfire rifles like it. I just fucking love my 10-22, I guess.