I am sure someone has the specifics on this, but if you are manufacturing enough where you need to keep your supplies like powder and primers in bulk, you open another can of worms. It used to be a private car could not transport more than 25 lbs of powder. A residential home could not store more than 50 lbs, and it had to be in a proper "powder battery" ie: a locked cabinet with a pressure relief system to allow the powder to controlled burn and not explode. There are square footage requirments for the reloading room. Some insurance policies set tighter standards than the law and can and will refuse to cover your home. Big volume gets pretty hairy. Give the buddy the ammo, make him buy you and the wife dinner when you go out Saturday night. Stay well under the radar, big brother really IS watching.