People buy a chitton of it because they can. It's relatively cheap, and you can put a pallet of it on your credit card. Same with primers. Not many people need 10s of thousands of primers. But you can sure wipe out a dealer's shelf for a couple hundred bucks.
After the last debacle there were scum that would buy it by the truckload from stores here in town, then scalp it at the gunshows. Gopher season rolled around and try buying some .22s to take your kid out. Stores finally started limiting buyers to how many they could buy at a time, that helped out considerably.
