Re: .260 load
My .260 has shot 142g SMK's, 130g Berger Hunting, and the 140g Berger Hybrid, all with H4350. All were easily under .5 MOA. And the 130g Bergers performed very well on 4 different Wyoming antelope last year, from 180 yards out to 575. So I don't think you can go wrong with the 130g Bergers, although I'm currently preferring the 140g Hybrids and can't wait to see how they perform on a few antelope next year.