I got some Auto Comp powder and it too works very good. Maybe it's just my revolver but I can't find a powder that it doesn't shoot good. The WST works good also, but not much wiggle room. There is much more data using Auto Comp for the 44 Special and 44 magnum. The guy that I got the Auto Comp from said most people are reluctant to try the new powders out. I'm glad I have had the opportunity to try all these new to me powders. There are more than enough to choose from when it comes to the 44 Special. I have to add that so far in the 44 Special, the 5.5 gr. load of WST is shooting a little better than the Auto Comp now that I have shoot both back to back. There are still some more loads with the Auto Comp to try, so I'm not done yet.