The 270 Win is the weapon. Deer to 400 yards are the game. What will it be? 150 grain Gameking or Speer boat tail? Thoughts,opinions.
For 20+ years a Speer 160g Grand Slam was my choice in my 7mm RM, deer and elk. Worked near and far. Stopped using them around 2004 when I went to true bonded bullets. Took my last elk with one three years ago, at 411 yards, quartering away.
Not the sleekest bullet, but out to 400 yards that isn't a problem. No problem in my experience getting MOA accuracy in a rifle capable of such.
That said, I now use and recommend Barnes TTSX and AccuBond to my family and extended family members for big game.