I have used the Barnes 110gr TSX bullet quite a bit out of my 270 WCF. The load runs 3250fps and I have shot Blackbuck, Axis deer, whitetails, mule deer, antelope, hogs, and coyotes with that load.
It works and no complaints.
My son used the same load out of his 270 WCF Sunday to kill his first antelope buck.
I picked up some 85gr TSX to load for my 6.8SPC, but since sold the rifle. Now am going to try them in my 270 WCF, just to play with them. I can not imagine them not working if they are put in the right place, especially at the velocity that can be reached . But I will probably only shoot them at paper and varmints.
I have used all weights of 270 bullets, even the 160gr NP's. Funny thing is, they all worked when put in the right place. The only time I remember having trouble had nothing to do with bullet failure, but a shot placement issue.
I think the 110gr Sierra Pro hunter would work, but I have never used them.
I have also used reduced loads with 130 & 140gr Hornady SP. The velocity was right around 2300fps with both bullet weights. Pleasant to shoot and killed deer when my nephews, wife, and son used them.