I need some powder and before I buy 8lb's of it I would like to know if it will meter well in a 550B that I plan on getting soon. Probably will buy a keg of WST as it seems to work well in my lower end plinking rounds. And while we're on the topic, has anyone tried 4.8gr WST under 124gr plated RN (9mm)? I have tried 5.0gr and it worked fine, but I didn't chrono it. Thanks Wanna kill these ads? We can help!