Sleek hunting bullets maximizing speed vs. BC for shots inside 400yds:
270 Win - 130gr E-tip with .459 BC at 3,100fps
308 Win - 150gr E-tip with .469 BC at 2,950fps
There's really not that much difference there downrange.
Methinks you're cherry picking a little there. Compare any other comparable 130gr 270 to 150gr 30cal, and the BC advantage goes to the 270. Not sure why the etip would be different?
Also would say it's probably easier to get to 3100 with a 130/270, than it is to get to 2950 with a 150/308. Comparable factory ammo is 3060 fps for the 130/270 versus 2820 for the 150/308.
