I have been reloading for a very long time, I am familiar with most of the powders out there on the market. But....when it comes to VitaVuori this is one that I have absolutely no exposure to at all. I think that I have some N130(?) on the shelve down there, I "think" that it was for a .375 Raptor that I built some time ago!! The powder seems to be quite diversified, however I do not exactly know where to start with usng this powder. I know that this ought to be simple, however I have been having difficulty making the jump into the Vitavouri powder arena. It seems like there is not that much difference between the burn rates of the various powders? Anyone using this powder and what has been your experience using this powder. There seems to be a lot the various burn rates and availability seems to be good. I do load for the .223/5.56, .270AI, 30-06, .308, 45-70 and .450 Bushmaster. I did call Vihtavouri and I do have a catalogue coming from them.