I chronographed my Husky mode 46, built in 1929.
My loads are 270 gn Speer over 46 grains IMR4895, 2100fps, 2770 ft/lb energy.
286gn Hornady rnd nose over 45 grains of IMR4895, 1970 fps, 2465 ft/lb energy
Federal standard primer for rifle.
This is in my gun, work your own loads carefully, I have no signs of pressure, easy extraction.
Dersden