I have been contemplating a 280 AI build for a while now. I have everything mapped out, except barrel twist. I know there are a couple of you guys with sweet shooting 280ai's and was wondering what twist you are shooting through. I plan on a 26" barrel and am still undecided on contour because I haven't finalized my weight goal yet. I hope to utilize the 160 AB, 162 A-Max, and 168 Bergers and SMK's. Everything I have now likes RL22 and hope to stick with it but will probably give RL 17 a try. I have done a lot of searches and there is not a whole bunch on info on the caliber, so if you guys have any proven loads post up your specifics please, and it won't hurt my feelings if this turns into the official 280 AI thread.