Well I finally got to the range to test some loads. 300WSM with 23" barrel, 165 grain Swift Scirroco and Winchester cases. My load with 4831 is pushing that bullet at right around 3000 fps. With RL17, I was over 3200 fps and showed some good accuracy potential. Was a really windy day so I stopped after testing two loads, but very good potential for velocity and accuracy. I think this powder is living up to it's reputation so far.