Bryan Litz had some interesting findings of case annealing using an AMP induction annealer in his book "Modern Advancements in Long Range Shooting", pg 144-153. Using both .223 and .308 Lapua brass he ran one 10rd group with no annealing, one 10rd group annealed on the 5th firing, and one 10rd group annealed after every firing. Basically, his findings indicated there was no real difference in SDs with annealing. (Never annealed 7.4SD, once annealed 7.5 SD, every time, 6.9SD) He does state that he wants to expand his test in the next volume as he does believe its beneficial in some cartridge combinations. I would be interested if any members have done their own test to determine if their load had any benefit from annealing.