I can tell you that my friend I shoot with uses RL-25 for his .300 RUM in a Remington rifle and I use the very same thing myself in my model 70 Winchester stainless. We both use Nosler Accubond bullets in the 180 grain.
The accuracy of both those rifles is under 1.5 inches at 200 yards! He has shot 1.25 inches several times with his Remington gun at 200 yds. I have shot under 7 inch groups with my rifle at 500 yards but my eyes are not near as good as his and I have 35 years on him to boot.
