I have heard good things about that powder too. With the lighter pill do not be afraid of trying R23, H1000, H4831sc, or even R26.My hunting pards built/bought 6.5x284's for our Wyoming trip last October. Both of them used a load with (IIRC) 54.2 grains R23 and the 130 Accubond in Nosler brass. Velocity was right around 3,075 fps in both rifles. Worked like a charm!