I annealed some brass today. A few showed none of that bluish discoloration we see when a proper annealing is done. Not seeing that discoloration, I annealed the cold cases a second time not too long after the first event. Is it possible to bugger-up a case by too-frequent annealing, even if the case is not over-annealed? I spin the cases with an electric drill in a 14mm deep socket (for .532" heads; half-inch for .473" heads) over the long finger of the bright blue flame we see at the center of a Bernz-o-matic propane torch. As soon as I see the neck turn even a tiny bit orange, the cases get flipped into a sink of cold water. I never let the neck get a bright orange; that's much too far down the road to the destruction of the case's elasticity. I made that mistake the first time I annealed my brass. I got them bright, bright orange. I had no idea I was ruining my brass...