The .270 really shines with bbl's longer than 22" as JB found out.
I had two 270's built with longer barrels after reading the acticle JB wrote in which he mentioned the 26" Shaw. The first was a Lilja at 25" and the second was a Kreiger at 26". I ended up cutting each to 23". The average loss was 24 fps per inch. The load was 61 grains of H4831sc and 130 grain TSX. The throat was cut a little long to accomodate an oal of 3.49" and this allowed the hotter load. Both were much more pleasant to pack after being shortened.