The 270 win and 270 wby is a huge difference from what I have seen. The 270wsm and wby would be more closely matched. I have owned all 3 270 cartridges and the 270wby is by far the top dog. My 270 wby which is a Mcwhorter rifle will push 130 to 3500 and 150 to 3240 fps. If you shoot longer ranges run the numbers on that. Of course it has to use a 26” barrel which is not as friendly in the bush.
