Vapodog,
Thanks for the clarification now I understand better what you meant.
I had never seen that statement before and wondered.

I tend to agree with your statements. There are people who can shoot 1/2 groups at the range that can' t hit a deer with a whole box of bullets at 300 yards in the field.

On the long shots with a dead solid rest and with favorable conditions is where the 1/2" rifle and all the practice pay for themselves.
Without the 1/2" rifle and appropriate skill/practice, shots over 300 yards are questionable.
With a 1 1/2" rifle, shots at 400+ have little margin for error.
Only a skilled shooter with a dead solid rest would be able to take advantage of the better accuracy of the 1/2" shooter.