I started with new Peterson brass. Haven't annealed anything yet. Is this something I need to start?I started down this rabbit hole with 270 Win. Both that and 7mm Rem overlap in slower burn powders. I’ve never had outright separation though the occasional pronounced secondary belt has been a reason to discard. FL resize every time and need for speed has resulted in approx 10 reloads per case. Predominately R-P brass and it’s the primer pockets that give out. Any issue in the neck is remedied with annealing.