A flattened ball powder. A lot can fit into a case. More than you will ever need. This powder looks a lot like W244, but has a vastly slower burn rate. You get these powders mixed up, you could be in trouble, so be careful. That is the only thing we don't like about this powder.
We have to say, this powder needs more testing. This powder "could" be one the best 9MM Powder you can buy. We will do more tests to compare it directly to Silhouette and True Blue to find the winner. It is also similar in performance to CFE Pistol, but perhaps more accurate and barely more velocity. More testing needed.
If you scroll down, and look at the 9.5 grains Lehigh 65 grain bullet that did 1800+ FPS...the primer is perhaps the lowest pressure signs of anything we have shot, ever. More direct comparisons coming. Direct 9 MM Major loads will be compared and primers/cases will be analyzed for comparison. As of right now, you can count W572 up there with True Blue, Silhouette as top tier you can buy in 9MM.