To buy some ammo on Tuesday, August 28 as a counter-protest the Brady Center to Arm Only Criminals and Governments (is that redundant?).
Details here and here.
Look, if you have less than 10,000 rounds, you are dangerously low anyway.
If you have over 10,000 rounds, then go for the next even 10k increment, whatever that may be.
This is what's known as a win-win.
So, get a brick, a box, a case; just get something. You can always give it to me if you won't use it. :)