I have been reading a lot of posts of members getting great results with both of these powders with 200gr Accubonds. I want to start reloading my 300 Ultra with these bullets, but I would like to know which powder works best in a factory Remington 700 rifle with a 26" barrel. I realize one powder may work better than the other in custom barreled rifles, but since my rifle is unmodified and I can't afford to experiment with every promising powder to formulate the perfect load, what would you guys suggest?