No Flys on the 270 WSM, it’s design was way ahead of its time, give Winchester the credit it justly deserves. I reload for mine and it’s performance is excellent,fast twist it and buy your own Custom reamer and your off to the races and you won’t be under powered . 270 WCF,270 WSM or 270 BEE , let them run !!!.
Don't really consider the .270 WCF "under-powered."
Even w/ the pokey ole 150 gr. Speer Grand Slam at a little over 2800 fps at the muzzle, it still carries 1250 ft-lbs at 400 yards.
...and the 140 gr. TSX at a little over 2900 fps, out to 500.
Would like to see a .277/170 gr. Nosler Partition.
GR
