I purchased 10lbs of lead in the shape of 2 inch letters. Melted into 5 pucks on an old bbq grill to my surprise it melted 1.5 hrs for the first 20 min for the last. The lead barely scratches with a finger nail but I can scratch it and it tinks when dropped more of a thump with a tink .I've read if is soft it will scratch and thump when dropped. What the heck did I buy? I havent tried to mold any yet .Does any one have a guess? Can I still use it for ..490 balls?