Silhouette is an exceptional powder for 9mm. If you happen to load your own defense loads it's also treated and has very low flash. It is also very pressure stable and used by the IPSC 9mm major guys. AutoComp is starting to see some use there as well and supposedly was designed for use with compensated pistols. I actually load Silhouette in high velocity .45 ACP JHP loads as well and I when I shot .40 S&W I used it there also. I haven't worked up a load yet where I didn't get excellent accuracy with Silhouette.