Either / or are good bullets in your 280. My son is splitting the difference and running the 150 PT's this Fall in his 7mm Mauser, but I can't imagine any of them leaving you high and dry.
^^^^^THIS^^^^^
But I love the heavies too, I'd have to use the 175 Partitions.
I agree about the 175s, but was not all that impressed until I recently tried Re33 with them. .5 grains under max, got me 3075 fps with Hornady and Nosler from my 26-inch sps. If I did not have so many 160's, I may consider switching back to the 175.