Everyone has their opinion that may well differ from mine but I consider ANY non-magnum cartridge to be good to 400 yards tops, some even less. No doubt a 270 can and has killed at 500 yards, I prefer a bit more "oomph" than the .270 has when ranges go past 400 yards. Were I using a .270, I'd try to stalk within my "comfort" zone before taking the shot. Bottom line is if the .270 is a really good deal, I'd buy it and make it work even if I have to change my tactics to do so.