New guy to casting her, sorry. I put a picture of a slug I cast. If you notice the tip looks dirty for lack of a better word. The rest of the slug is shiny. This happens with any slug or ingot I try to make. I've tried different heats. I've fluxed. I've cleaned my pot. I've fluxed in a different pot then cast from a clean one. This occurs with bottom poor or laddle poor. I buy the lead from ROTO Metals. Honestly i don't even know if it's a problem I should be worried about. Any help is appreciated. Thanks.Ive been having problems uploading pictures, so I also made the slug picture my profile pic.