The national BSA organization does not supply ammunition, that is up to the units and the camp organizations that use the ammo. And they do not get the budget to purchase years ahead for something that is usually available at every corner store.
I'm taking a group of scouts on a shooting trip in a couple of weeks myself; we're also trying to find a couple thousand rounds of .22LR before then. If we can't, myself and the other leaders will donate from our own stashes to make sure the boys can shoot. Luckily, most of the leaders in our troop are gunnies.
