HS-6 is an excellent powder for 9mm. I have used it with both 115 and 124 grain bullets. The burn rate is right on for 9mm.
It is not as economical as some others, but has good case fill, meters easily, and gives good velocity with softer loads. Shoot clean in all my 9mm pistols.
It is not the best choice if you are looking for higher velocity. power pistol is a good choice for faster movers.
To the first responder: IIRC, .38 SPecial and .357 Mag like a faster burn rate powder. This may be the reason HS-6 is dirty for you, it has a medium burn rate.
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