Just some harder lead that I acquired, I have about 200 lbs of this so I thought someone might want to cast harder pistol bullets. Don't know the blend, looks like it was door weight or window weights, several pieces that I have are 2 feet long triangular shaped with an eye for a cable at one end. The BHN number comes from using drawing pencils of differ hardness, the first one to scratch the pieces was the HD which indicts 14-15. Hope this helps. steg49