I ran 57.0grs of IMR-7828SSC and the Sierra 175 soft point Gameking. Chronied 2758fps from a skinny 22" 700 barrel in standard 280 Remington chamber. This load is from the Nosler #5 manual, but I subbed a Sierra instead. They shot excellent. One of the smaller groups my rifle managed. I got a good deal on them at a gunshow and threw this load together to try them out. Typical Sierras. Very accurate. Would make an awesome long range load. Neck and neck for power with a 30-06 and a 180 at 2700 fps, but with a .533 B.C. It takes a 200gr 30 cal Sierra to equal that.
