When I had a .270 and was loading for it, 57gr of IMR 4831 was a go to load for any bullet in the 130class. I also had good luck with Reloder 16, and H 4831sc. When I bumped up bullet weight, I used Reloder 22 for 150s. I never got around to trying it, but I would imagine that Reloder 23 would be excellent as well.
