I can scratch (with my finger nail)
This would almost be pure lead. A trick old Muzzle loaders would do to check scrap lead to see if it was soft enough for muzzle loaders. As said wheel weights make a great source for mid range loads. With you starting out in casting. I would get either Lyman or RCBS books on cast bullets. Another suggestion would be go over to the cast boolit sight. Casting can save you a lot of money . If done right. If not it can give you some real problem..