I would not call it the ultimate accuracy powder. But you can push it pretty hard w/o getting pressure with the mid weight bullets.

I thought that would be the ultimate powder for NATO velocities in a 16 inch carbine with 55gr bullets. It really was not all that impressive.

Then i pushed it to the limit with 70gr Barnes TSX bullets. That was by far the fastest velocity i was able to achieve with that bullet. Accuracy was better than TAC.

Long time ago now. Now i use neither heavy copper bullets or ball powders if i can help it.
Be consistent with your loading, practice your shooting, speak the truth, love your family and you will be rewarded.