Buy all you can, ship it close to the Cali line and sell, sell, SELL to the Californians sneaking across the border to buy ammo after their chintzy law goes into effect.
Hmm, I wonder what FedEx's policy is regarding "will call" pickup at storefront locations? If they'll let anyone pick up, regardless of delivery location vs. addressee's state of residence, then this ban won't work at all.