[LHB1]

Either mold or alloy or both were not hot enough. I heat my mold by placing it on top of the pot while alloy is melting and coming up to casting temp. It may take several castings to get the mold up to temp even if the alloy is hot enough. Note: if you start getting frosted bullets, then the mold or alloy or both is/are too hot. If that happens, open mold and let it cool briefly; also reduce pot/alloy temp slightly. If wrinkles start appearing, you have gone too far. A little experience will allow you to stay between the too cool and too hot limits with more consistency. Good luck.