Seafire, I was easily able to get 3100 fps out of my 6.5x284 with RL17 powder in my 28 inch barrel. H4831 topped out about 2950 fps. (not sure if 28" barrel in cancelling factor in your comparison)
No dog in this fight, just quoting my experience.
My barrel only lasted about 1200 rounds however before accuracy went away.
