Well, actually the laws in California are pretty vague.
There are sections that clearly speak of a 1 pound limit but it's not clear if this applies to a household.
There are also some exceptions that have caused some in California to say it is really a 5 pound limit.
Then, on another website I found this quote written specifically about the California black powder limit question.. I don't know if it is true or not.
"§ 555.141 Exemptions.
(b) Black powder. Except for the provisions applicable to persons required to be licensed under subpart D, this part does not apply with respect to commercially manufactured black powder in quantities not to exceed 50 pounds, percussion caps, safety and pyrotechnic fuses, quills, quick and slow matches, and friction primers, if the black powder is intended to be used solely for sporting, recreational, or cultural purposes in antique firearms, as defined in 18 U.S.C. 921(a)(16) or antique devices, as exempted from the term “destructive devices” in 18 U.S.C. 921(a)(4).
In any case, it's fun to harass good old Claude every once in a while. :grin: