I am about out of Retumbo. I was looking for a replacement for the 6.5 WSM. I have a pound of VV N570 which is coarse and a little too slow for 140 gr 6.5 bullets. Although N-570 will make 160 gr go one hundred feet faster than Retumbo. Graf has Norma 217 available but I appear to be on my own for data. Is Norma 217 close to Retumbo in burn rate? Since both Bufors and Norma are in Sweden, I have a theory that Norma has Bufors make a run of powder for them and they package and promote the run. Norma has had miserable promotion in USA but that is another subject. Is Norma 217 just Reloader 25 with another label?