Was at the range yesterday with half a dozen rifles. Among them was my Model 70 Classic .270, with a few old and new loads. Among the new loads was one of the 140-grain Tipped Trophy Bonded and 59.5 grains of H4831SC. Muzzle velocity averaged 3043 fps and accuracy was excellent, 4 shots in .78 inch.
That's from a 22-inch barrel and may prove a little warm in the long run, though my rifle didn't show a hint of any of the traditional "pressure signs." The only pressure-tested loading data for the TTB's uses Alliant powders. Hodgdon lists a maximum of 58.0 H4831SC with the 140-grain A-Frame, but the AF results in higher pressures than just about any other jacketed bullet. Nosler likewise lists 58.0 as maxwith 140's, but Hornady lists 59.9 grains H4831 as max with the 140 Interlock BTSP, 140 SST and 145 ELD-X.
