Dye7barrel: I use the wonderful Nosler 140 gr. Partitions in my custom 280 Remington.
I have killed Black Bear, Elk, Mule Deer, Antelope, Whitetailed Deer, Mt. Goats and Coyotes with this great bullet.
I would not even consider changing bullets for my 280 Rifle.
I have used the Federal 210M in my 280.
There came a "primer shoratge" some years back and I am now using Remington 9 1/2 primers in my 280.
Best of luck to you and your new 280 Rifle.
Hold into the wind
VarmintGuy