Geno;
There has been considerable warnings issued in the US against using battery lead for casting. I will have to look up & see just what but believe it contains some other alloy which is extremely toxic, much more dangerous than the lead itself. Do you have any other lead of a known hardness? A method of comparison is to take two pieces of lead of different hardness, place in a vise with a small steel ball between them, & close up to imbed the ball into the lead. A comparsion of the indent diameters can give the hardness of the unknown piece with great accuracy, as long as good measurements are taken. This is actually based upon the Brinell hardnes testing. Have a book pblished by the NRA several yrs ago on cast bullets in which both of these are covered. Will have to try & look it up.
