The 1904 loading for this round had a 154-grain flatbase bullet at 2881 ft/sec: actually HOTTER than a .30-'06!
It's a good cartridge for handloading, no secrets, no tricks. I still have the dies I bought in 1965, have NO idea how many rounds they have put together over the years.
It likes 4895 powder, also 4064, especially in the 98k, which has only a 23-inch tube. Slower powders in the old 29-inch barrels and you can really speed her up and still keep your pressures fairly low.
Good luck.
BTW, I made my first 300 brass out of '06..... REALLY rough on the hacksaw arm!