i use the poor mans' method to anneal my (non-nickel plated) cases. first clean the cases so they are bright and shiny. place the cases in a cookie pan with water half way up the case. using a propane torch pointing straight down, fan the case necks with the flame, when you see the blue line run down the case, knock the case over with a pencil. it isn't the most sophisticated way, but it does work quite well.
sg