Nitrocellulose
http://www.ammoland.com/2016/08/atf-reclassifies-wetted-nitrocellulose-as-explosive-mat...
ATF Reclassifies Wetted Nitrocellulose as Explosive Materials Under Federal Laws
http://conservative-daily.com/2016/0...door-ammo-ban/
"A key ingredient necessary for making gunpowder has been re-classified as a high explosive, making it illegal for any company within the industry to transport or store it as they have for decades.
It all stems from how the ATF regulates a chemical compound known as nitrocellulose. For decades, the firearm industry has been allowed to store and transport wetted nitrocellulose without having to treat it as a high explosive. Manufacturers deliberately mix the chemical compound with water to make it less volatile.
Overnight, the ATF just completely changed its regulations, turning everyone in the ammunition industry into felons if they do business the way they have for decades.
The entire industry is now at a standstill. Without nitrocellulose, you can’t make smokeless gunpowder. Without smokeless powder, there’s no ammunition.
This is the real deal. If this regulation stays in place, it will take months for the industry to recover and send ammunition prices through the roof!"