Howard Nemerov provides some perspective on the rumors of an ammunition ban.
Bottom line: Buyers help keep prices high because of concerns over what might happen in the future. As prices spiral and demand clears the shelves, people worry about getting ammunition in the future. Add a few rumors, people worry more and demand goes up even more. It may be best to stop stockpiling ammunition for now to reduce demand. Instead, spend your energy on convincing Congress that the civil right of self-defense is an idea whose time has come.
The NRA is running a promotion where you can join free for one year.
If you live in Texas, you should also join the Texas State Rifle Association. If you don’t live in Texas, you should join your equivalent local/state organization.
If you choose to do neither, at least be politically active. With the Internet, it doesn’t take long to find your Congresscritters and send them a quick email. When you contact them, keep it polite, respectful, to the point.