Just obtained some Accurate #9C. Did some research and now believe that it is the same powder as Acc #9 but sold commercially.
Just to make sure, I tried some of each and the velocity in my .357 Sig was similar. I tried to contact Accurate by E mail, but they have not responded to my inquiry. Does anyone have and knowledge or experience with this powder? Any sharing of information will be appreciated as I have several pounds of it but want to use it safely. Thanks for the help.