I live in Arizona also. The regulations that limit real Black is mainly a Phoenix thing. You can find real Black Powder in Tucson and a store in Payson (actually Star Valley area). I have from time to time bought Goex ffg from Tucson as $12 a pound so I have a fair amount on the shelf. I also noticed that the big muzzleloading rendezvous at Black Canyon has black powder for sale. Watch for that if you can make it.