Brass Case Neck Annealing is incredibly beneficial, increasing brass life & improve accuracy. The correct method is to quickly heat the neck to at least 700°F but no more than 800°F then allow it to cool. It’s acceptable to water cool the brass but this doesn’t affect annealing in any way, the modern method is to let brass air cool; as brass manufacturers do. If annealing isn’t done correctly benefits are nullified, too cool and you don’t remove work-hardened stresses, too hot and the brass is too soft resulting in collapsed shoulders and scrap brass when resized. Every Anneal-Rite brass annealing machine comes with a 2 oz. bottle of 750°F Tempilaq heat indicating fluid, it’s guaranteed accurate to + – 7 1/2°F for perfect temperature control. Just brush a small dab inside the case neck, when the color changes to black, you’re at 750°F. Do the job right with the ANNEAL-RITE, perfect results are guaranteed!