Got lucky today and found some VIHTAVUORI N310. Found out Wilson use's this powder with the 200 grain boolit when testing handguns they build. Pricey but since I will only be using 4 grains at a time 6 pounds will last me a LONG time. I really don't like using a powder with a burning rate this fast but in todays world you do the best you can do.
Was reading VIHTAVUORI's web site and they also offer 320, 330, 340, and 350 powders as well. Has anyone tried them? Likes or dislikes?