just for targets? hard call. there are a lot of calibers out there that with the right shooter will work just fine. if you can shoot the 270 better than a .338. use the 270 and vice versa. it comes down to what you are comfortable shooting.
I have been a silent witness
to all of America's finest hours.
But my finest hour comes
when I am torn into strips and used as bandages
for my wounded comrades on the battlefield,
When I fly at half-mast to honor my soldiers,
Or when I lie in the trembling arms
of a grieving mother
at the graveside of her fallen son.