To get this ammunition cache take a barrel of TNT from the Badlands mine and go to the abandoned house in the Badlands where the buffalo graze. At the back of the house on the outside face the chimney (looking west) and place the TNT barrel on the left side of it. Then stand back and blow up the TNT barrel to open a hole in the ground where there will be ammunition for ALL weapons. The ammunition will respawn over time after you leave the area.
Added by: Sanzano Aug 15th 2011, ID#7634