The 300 RUM does have some impressive ballistics.
BH63
I wonder a bit about that. My RUM does 3300 with 180s and my 300 Wins do 3150 fps just as regular as clockwork.(26" barrels)
That's a lot of buck and roar for a stinking 150 fps gain. It doesn't matter much now; the barrel melted out like a dropped ice-cream cone on a hot day. 600 odd rounds and it was hurt real bad.