Did my first cast today, lee 358158 TL SWC, and i kept having problems with wrinkly bullets. After reading much advice on the forums, i am fairly sure that this is a problem with the mold not being hot enough or the melt not being hot enough. Thing is, I was casting at 750 degrees, and the mold was hot enough that when dipped in the melt, the lead ran off easily. So now im wondering what would be causing this?