I really think that any powder will work. If I cared to prove it, I’d use some Retumbo just to prove the point. Once it’s ground down to 100 mesh, it’s pretty much the same stuff. One small exception is the coatings that the granules sometimes get to get certain burn characteristics. These could have a slight effect, but I doubt it would be much. We just want some extra heat and the NC provides that. Over on Mewe, folks are grinding pingpong balls and reel-to-reel tape(also NC) and getting good results.