Make sure they are seated straight. Run them at max.
I have had quite a few rifles that would group them as well as Sierra's of equal weight with the same charges.
At present, my 7mm Mashburn Super shoots 160 NPT's as well as 162 Amax...and the Amax is an accurate bullet.
Generally I have had quite good accuracy with them.And have killed with them as far as 500 yards so the whole Partition accuracy conundrum is something I'm really not familiar with. On those rare occasions that I had a problem it was the load or the rifle that was sick and not the bullets.
