Currently have 165 grain accubonds loaded in my 300 wby, load data suggests they are going about 3100 fps. Shoot ok but have yet to shoot something with them.
Is that a slow node? It should be pushing a lot faster than 3100 out of the Weatherby 300 Mag with a 165 AB. Out of my 300 Winnie with a 180 Accubond, I clocked 3,175 fps off the chrono. It's .6 grains under max with a 26 inch barrel.
That bugs me why the Bee is slower.
As for the OP, you should be getting over 3,100 easy. The Magnums tend to shoot more accurately the faster you push it closer to max, especially in my rifles. I have gone as high as 3,260 but hit pressure, and backed off to a nice node at 3,175 fps.