Yup, that's the ratio of 0.7, which doesn't seem to hold true, if one uses the U-view measure. Semisane speeds with the 300g Deep Curl are 200 fps slower using 777 than than mine using BH for the supposedly same volume if one uses the 0.7 ratio. I didn't think BH was that much better than 777, and it wouldn't be if i poured my powder into, and out of a U-view measure set at 115g.

Of course, another possible difference is i shoot my rifles at over 4600 feet above sea level. I think Semisane shoots his rifles under water, because of all them dikes around his place. He claims he lives 12' higher than sea level, and shoots his rifles at over 200' elevation. If what he writes is correct, there a are lot of strange things needing to be explained. Semisane is the one that can plumb us all up, or not.