That's just what I did, Hudge. Had a 1:8 Douglas #3 SS put on my M70 SS 270 WSM, replacing the original barrel. Shoots the 175 TGK great at 2850' with RL 26, and that seems mild in it. Have the 165 ABLR and 170 BT on hand also but so far they haven't equaled the 175 TGK in accuracy.
Not much data out there for heavies in the 270 WSM, but no problem, just use 6.8 Western and work up from there.

Raven Rocks has had Norma 270 WSM in stock off and on for a while, and they are expecting ADG soon. I bought enough Norma to shoot out my barrel but am intrigued to try the ADG if it ever comes available.

I too, would love to put a 1:8 #2 profile barrel on one of my 270 Wins. That would be a fabulous rifle!

Rex