I have not done much casting with metal other than wheel weight rendered alloy. I've cast a lot of that. Its so easy with which to work. Today, I cast with alloy purchased from one of our sponsors, Lead 'n Brass. The metal I ordered form them was rendered berm scrap and this is typically fairly pure lead from copper condom bullet cores, .22 slugs and such. Not knocking the product, it is just that the berm scrap renderings were more difficult to cast without getting the wrinkles and under full of detail. I did well after getting the alloy up to the max available on my Lee 20# pots and then the molds up as hot as I could keep them. Just hate to see the decline of availabliity of WW alloy. Like I said, I'm spoiled.
prs