I started mandrel sizing the necks of my brass. I loaded some 6.5 creedmoor Hornady brass, and I gotta say running the mandrel in them, it sure seems there was a significant difference in neck tension. I am not sizing the factory brass first. Is that anyone else's experience?
I loaded some .243 for myself without mandrel neck sizing, and I seem to recall there was more difference when seating those bullets. Any how, I am going to mandrel neck size everything for my precision rifles now, and anneal. Hope to see some improvement in SD and ES.
I loaded some .243 for myself without mandrel neck sizing, and I seem to recall there was more difference when seating those bullets. Any how, I am going to mandrel neck size everything for my precision rifles now, and anneal. Hope to see some improvement in SD and ES.