When it come to moulds Lee has the best value. I have heard the 6 cavity moulds are good. I have several of the 2 cavity moulds and for the price am very pleased with them. I don't think they have a 4 cavity mould, what I do is cast with two 2-cavity moulds , filling one while the other cools enough to open. I use this method and cast with a dipper that has a little side spout. I get the best bullets like this. I tried my bottom pour pot , again , last weekend and still keep getting bullets that are not 100% filled out. Can cast more with bottom pour but get better bullets with ladle.