85-7828 with a 180 used to be a "standard" load for the 300 Weatherby....or right in that range, kind of like the 270 and 60-H4831. Everybody used it.
What has happened to the Hodgdon data I don't know since it's been awhile since I owned a 300 Weatherby.
But just like any other cartridges that get bad raps for variations in velocities fro manual data,IME velocities varied from the 300 Weatherby,too. I had two M70 Classics, both chambered 300 Weatherby with 26" SS barrels that varied about 125 fps with that very load.
I think bullwhacker is getting the velocity from that tight,smooth button rifled Lilja barrel. I have seen that type barrel deliver somewhat more velocity with the same charges than a lot of M70 barrels, which seem to take heavier charges to generate the same velocities....could also be throat,rifling, etc....whatever it happens all the time.
