I am looking to start casting for the .454 Casull. I will likely start out with the simple Lee 300grn but I am looking for suggestions on a 350grn mold with GC. Any suggestions on brand and sources? Should I alloy my lead any specific way? I am mostly sitting on wheel weights but I have some extra hard shot I can use to harden the WW further. Whatever I cast I want to push them right to max so I am guessing a quality lube will be necessary. Any insights are appreciated, I am still new to this...