you are warming the bullets an lube in a oven of some type. i did 10 to 15 mins at 200 to 250.

i did mine in a $5 goodwill toaster over.
going to have to find a smaller pan. it is said to be one of the cleaner methods. I am going to pick up a cheap pair of pliers just for this. set it on wax paper the bases come out a little cleaner. still trying to figure out a cook cutter for the 50cal and 54cal bullets