I have come across a MP 312-159 HP mold that I forgot I even had. It is brand new so I am looking for advice on how to start up with brass molds. I have been casting for 55 years with steel molds and probably 8 years with aluminum. The steel is easy, the aluminum is easy when all the stars align right. Aluminum has to be hot! Hotter than I like to cast at. I was just experimenting today with a steel mold and the same bullet in an aluminum mold and I had to have the temp at 750 for the aluminum. They jumped right out of the mold at that temp but as the temps went down to 700 I started having trouble getting them to drop. At 650 where this alloy likes to run they would stick something terrible. Bullets were formed good with no wrinkles but no drop. The steel mold was dropping them like they were pushed out at 650. And no frosty bullets. I have never used brass so some pointers to get started would be great. And yes, I already knw about getting the mold perfectly clean.