Hardness depends on the type of shot if it's chilled, magnum or just straight. Should say on the bag if its still in the bag. Stuff has gone crazy price wise. You probably got it for around $12-18 and now it's going for $44-55 per 25 lbs. I have cast some jigs from harder lead thinking that they wouldn't snag as easy on jagged rocks but never could really prove that it made much difference. They do weigh less though. Most of the dross that comes off of shot is graphite if it's still the nice shiny black and not oxidized.