Not a problem I have done it many times and heard of many other people doing the same thing as wellLet me have it with both barrels I'm ready for it. I have three 1 pound containers of RE33; each with a different lot number. I purchased these new from a reputable company and they have not been opened. With an eye towards NOT having to work back up to a safe load each time I have to open a new container; would I be able to SAFELY combine the contents of these 3 containers in order to form a homogenous batch of powder? I do know there is the very real issue of static electricity buildup that would need to be addressed, but I wanted to know if my "mixing" idea was a bad one before I asked any other questions.