In college, I was fascinated with the AAR, but I guess I gravitated to short actions and away from wildcats, but the AAR is a good round. Seafire on the board uses a 6.5x57. Likely not too far off. Another round of consideration for a long action might be the 6.5x55 AI, may be one also known as the BJ Arch? Anyway, Lapua brass formed out might be a nice round. It is said to hover near 6.5-284 territory......for those in need of a little boost.
I have been content for what I use my 6.5's for, but flatter trajectory never really hurt too many (though it seems someone I read using a 7x57, maybe Boddington, overshot a mule deer when underestimating his rifles trajectory).
I can imagine the faster 6.5s can take alot of guess work out in the field at unknown ranges when LRF is not available. Terrain where hunted can determine ranges that opportunities present.
