When I load for longer range shooting I do all my brass prep then measure neck ID before loading.
My R-P 30-06 cases group very well, sub MOA to 500 yards (mossberg 100atr thin barrel)
But I get anal when measuring neck I.D.
It needs to be exactly .306" I.D. not .0005" from that.
I will post pictures. I also turn the case lightly with my fingers when measuring I.D. to see if the neck inside is out of round. I can watch my needle move on the calipers.
OK some that did not make the cut for past 100 yard shooting.
And one that did make the cut. Happy Holidays.
My R-P 30-06 cases group very well, sub MOA to 500 yards (mossberg 100atr thin barrel)
But I get anal when measuring neck I.D.
It needs to be exactly .306" I.D. not .0005" from that.
I will post pictures. I also turn the case lightly with my fingers when measuring I.D. to see if the neck inside is out of round. I can watch my needle move on the calipers.
OK some that did not make the cut for past 100 yard shooting.
And one that did make the cut. Happy Holidays.