i have been reading about casting here recently and was ignorant about blackening ect.i have an aluminum and steel mould in 451 and never do anything cept wipe the steel one with a bit of motor oil after session to prevent rust.i use a ladle and bout 2 ounces of lead for two cavity mould.propane plumbing torch for heat source and I cast out doors on the ground(cant drop a pot of lead if its already on the ground)very few rejects.question for yall veterns for cap and ball,are wheel weights safe for use?i know they are a bit harder than pure soft lead,but how do they perform ballisticaly?and are diving weights pure soft lead?