Perhaps we should consider adding a muzzle loader to the arsenal. If commercial ammo becomes so scarce you just can't take it from anyone, an old-time rifle might be all you can use. Lead will be easy to come by. I made black powder just to see if I could when I was in high school, or was it college? Either way, it is easy to make. Percussion caps might be hard to find, so a flint lock would be the rifle to have in the collection.