117g HH or 126gHH

[slatebuilder]

Hammer has a website with a lot of load info for just about any cartridge. I don't have a .280, but the 117 Hunter is great in the .270. mtmuley

What’s the twist in your .280?

I have to figure that out

 

[Benfromalbuquerque]

@slatebuilder do both, load up your 280 and 270 for your trip!

 

[TheJason]

I have to figure that out

You could probably very safely start with the 131 Hammer Hunter or the 136. H4350 or RL16 for powder.