I preheat my moulds to about 400F on the kitchen stove ( electric flat surface unit) .
I run 2 to 3 high capacity moulds at a time. Fill, set aside to cool, Empty and refill next, etc etc.
Dropping sprues back in the pot as l cast as well as adding small quantities of small lead chunks to the pot keeps the level up and avoids reheating delay. I also have spare pots to prep metal for the main. My work needs precision boolets so I run all through a Star lubersizer. I also tumble lube after. Big reductions in smoke but also slippery and may require slight powder bump for marginal load function. I have LoadMasters, Star loaders all preset