TF1 mentioned it... twist rate for factory .270 Win rifles is slow, which limits high BC bullets due to their length. There are some .277 bullets with high-ish BC values, but be careful as factory barrels may not fully stabilize them. ...
Lilja will turn a 1:8" twist barrel with .277" diameter. Have one on a rifle. And have some 150gr TSX and 180gr Woodleighs on hand. But, have not made time to play.
