Heat.....show me the Heat!!
Howdy Kent, I cast 5 different Big Lubes and at least that many for smokeless. I pour HOTTER than most, learned that from Driftwood, a little frosting on the bullet never hurt anything. For 6-cavity BL with a bottom pour Lee I don't start until I hit 825* and often around 900* depending on the caliber and how fast I'll start losing heat. Also I preheat the mold on a hot plate with the last cast still in the mold, makes it easier to do the Bull Plate too cause I'm not losing a bunch of heat. I like to maintain 775*-800* through the session, only the first handful will be frosty. If you have a real finicky mold a touch of 50/50 tin will help. For smokeless I use a Master Caster, heat the mold in place with a hair dryer. About a 10 BH at 740* works fine. Good Luck
Jefro
-Relax-Enjoy