I have the Lee Pro 4-20 melter and find that my Lee mold (just starting and only have 230 swc mold) fills much better when placing it against the nipple. I have learned to drag the mold off the spout in order to get an adequate sprue puddle. On my melter, with straight wheel weight I get nice slightly frosty bullets at about the 3.5 - 3.75 setting.
