Berger's already got the 170 eol. 270 in some new cartridge was bound to happen. Of all of them, 28 nosler would be my pick if there were only one. I don't have a 28 nos. But I do have a 7mm stw, 7mm just seems to take the most advantage in a super over bore cartridge. I push 180 eld's @ 3189 fps braked in a 14lb rifle and it's very tolerable. It's my guess that you could run a 168 ablr in a 28 nosler up against the 165 ablr in a 27 nosler and it would be a really close race. 27 should win out ballisticly but not by much at all. I like the nosler line of cases. Lots of folks wanted a 277 cal cartridge set up for long heavies. I guess nosler decided they would give it to them. Can't complain about that. Cudos to nosler.