I have tried Ramshot Hunter, H4831 and Reloader 22 with 140s, inlcuding the Accubond, and like Hunter the best by far. Not sure of my load without looking at my notes, but it is a book maximum or close to it. Second choice for accuracy is Reloader 22. This is from a sample of 4 or 5 .270s over the last few years.
