My sons 270 is an old Rem 721 that has had the action trued and a Hart barrel installed by Mike Bryant. It shoots the 145 ELD-X very good. We are getting 3030 fps with H4831 in a 22" barrel, with a Silencerco Harvester for suppression. We have shot that combination out in the 1050 to 1300 yard range quite a bit. At 1000-1150 it is still doing very well accuracy-wise, but by 1250-1300 it is falling into trans-sonic and starting to open up. BC seems to be pretty true, it is a really good bullet if you are stuck with that 1-10" twist that nearly all 270's seem to have.
Out to the 500-600 yard distance it hits good and hard, better than the 6.5 Creed from an energy standpoint (though the Creed is better in the wind). Eventually the better BC of the 143 ELD-X reels in the 145 out of the 270, but not until it is past the distance that I would really shoot a deer with either of them. Personally I would draw the line with either about 800-850 yards for deer, and that would be under very good conditions.
