The 300 Ultra deserves a bullet w/ a high BC. The TSX and the Partition just are not that high. Why shoot an Ultra with a TSX and have the same point of impact @ 400-500yrds as a 300win mag w/ a high BC boatailed bonded bullet. The TSX is awesome on game, but a 165 Interbond, Accubond, or Scirocco at 3350-3400fps is flatter and plain mean on elk. My favorite load is a 200gr Accubond @3150fps. I guess I just think that if your going to use one of the flattest shooting guns, you should team it w/ the flattest shooting bullets. Just my opinion. Brett