I can tell that extreme spread and standard deviation is important by the way it turns on my buddy 57K. So if its important then I need to use it. He gave me a link for a good calculator I can use. The most interesting aspect of it all is how it relates to practical accuracy.
That, of course, depends on whom is doing the loading. In terms of velocity vs. pressure, none of them do anything that can't be matched or exceeded by HS-6 which is what all of these Winchester and Hodgdon powders are based on including Silhouette which was originally sold as Win. WAP.With 90gr and 115gr bullets the CFE has a little better velocities than AutoComp and Silhouette. Can't wait to see how CFE performs. I think it will get me into the 1400fps range without going to plus P....which eventually I'll take them all to.