rat-holed enough ammo for 3 years of regular shooting. 5 years if i ration it a bit. Rat-holed enough materials for reloading another 4 years of ammo.
Learn to rat-hole ammo and learn to reload. Do it now so when the next panic-induced drought hits you won't be sitting there wondering where to get really over-priced ammo.
In the meantime, look at alternative shooting products, like air-pistols, laser training products like iTarget, SIRT pistol, etc.