For years have loaded Unique over a CCI300 primer with a cast Keith style 255gr SWC. Current data for Unique shows 9.0gr for 941 fps. I have been under the impression that my 8gr load would yield about 800fps. I want to reduce my load somewhat but the new data leads me to believe the newer powder is "hotter" than the older stuff I'm loading?? Anybody got some advice??