So you fly to bumphuck, nowhere to hunt the rare jiagaloo and the airline loses your ammo.......
Within realistic ability based hunting ranges (400 yards or <) the 270 will do just fine.
The 264 WinMag has factory ammo and, if you wish, can be loaded down to 6.5-06 performance.
You ain't gonna find 264 Winmag ammo in bumphuck nowhere either so it's a moot point.
