An 8-twist 270 WCF is the way to go, out of your choices. More and more good bullets out there for a fast-twist 270, and the old standards will shoot just fine too. The extra pop of the larger cartridges is just not needed.
KchuntShoot,
The only things you "shoot",are your mouth and Imagination...you "lucky" kchunt. Hint. Congratulations?!?
Now do "tell",what bullets you are shooting in "your" 1-8" 270? You know,the Imaginary ones you Pretend with. As an aside,just how "loud' is your Imagination,when you "shoot" it? Hint. LAUGHING!
Pardon reality. Hint.
LAUGHING!
Bless your heart for trying,you Lying Piece Of Fhuqking Schit.
Hint.
LAUGHING!.............