If they don't melt. So be it. But salvaged from a bullet trap usually plated are damage enough which requires no special treatment by its smelter person. Personally I don't care to re-smelt range lead. Just too dirty having to bother with. Maybe if and when lead becomes impossible to come by I'll change my tune. But at this date and time I prefer to buy my lead from a seller. Reason to: I know prior to my purchase just what type or where the lead came from I'm about to pay for. Range salvaged lead is a mix of who knows what?