Re: .280AI and 6.5x284
.280AI is my main hunting gun right now... Running out of a standard Rem700 LA you aren't limited with bullet seating depths and I'm pushing 168 Bergers right at 2935 fps. I mainly run 162 Amax's for competition and general steel shooting. Pushing them right at 3050 fps with 62 grains of 4831SC. 24" Rock Creek barrel.
Loads were super easy to develop, inherently accurate caliber, good barrel life, low recoil... Have used it for everything from ground hogs to elk.