What about matching velocities for comparison! Not a single bullet in 26 or 30cal is near comparing on bc. Not many 30cal 130's have a boat-tail. 150's in both cals are bc's apart by a lot! Do you scrap all of that and start with m.e. or just matching fps? Under 600 I'd take the 308! For those who thinks 308 has more recoil than the 6.5, then try a different gun. My cousin's husband has never liked the recoil of the 308, so he shoots 7-08. I changed his mind! I built an AR with m118 chamber 22" 11T for him to shoot. Using m80 and 180 soft-points he was very surprised about the lack of recoil. AR's are easy to tune out recoil for sure!