I am hoping to build my first rifle later this year. I have had this project on the back burner for some time mostly because I haven't been able to decide what I want. At this point, I am really leaning toward either a .257 Roberts or the AI round. I honestly can't decide. I'm not thinking of the AI route because I want to push the envelope on velocity. If that is what I wanted, I would just go .25/06. I guess the cool factor or just because it is different part of it appeals to me. Regardless, I like the idea of having an accurate, light recoiling and fun to shoot round.

What would you do and why?