Case prep on annealed cases
I am new at case annealing, so I have some questions if someone can share some wisdom. I reload all of my rifle cartridges and have had no special problems until I built a 7stw, the case necks split after 2 or 3 loadings. Someone told me to start annealing the cases and they will last longer. I have some new brass that the case necks need prepped, should I prep them before or after annealing the cases. Any help would be appreciated.