I have compiled some .280 Remington loads with corresponding velocities from a 22" barreled Win. 70. They are in an Excel file, and I would be glad to email them to anyone who wants to see them.

I like this one for elk/ deer combo hunts, although its right out of the Hornady manual.

R-P case
REM 9 1/2M primer
58.3 gr. H4831SC
154 gr. Hornady Spire Point
2886 fps

Email me at a_p_technician@yahoo.com should you care to view more.