Remember if you are going to buy a slug mold and cast them, you absolutely must acquire almost 100% pure soft lead. Using recycled wheel weight lead (which is a harder alloy and and different density which shrinks differently as it cools and releases from the center pin) can spell a lot of aggravation and frustration.
Pure or almost pure soft lead drops very quickly and cleanly from your mold.
Pure or almost pure soft lead drops very quickly and cleanly from your mold.