I have used a bunch of loads in several .300 WM's, but these are the ones that stood out:
168 TSX, 72 grains of RL-22 for around 3200 fps.
JB:Do you recall the rifle and barrel for that load? Not that I doubt it,just that I had to go a good deal heavier than that charge in my 300's (which were M70's) to get that velocity.
Wonder, does the Barnes require lighter charges than, say, the Partitions I was using?