[owenbright]

4.0gr WST has worked very well w/ 124gr FMJ for me.
Any others?

[Walkalong]

A bit fast for 9MM, but it should work. I expect W231 would be better. I know it works well, although it won't give top velocities.

[robctwo]

4.4 gr WST, 125 gr Hornady Action Pistol, OAL 1.09. Runs like a champ in my Sig 226 ST Stock and is very accurate like the Hornady XTP for less $. I paid 92.99 plus shipping from Midway for 1,000. They aren't as cheep as lead, but they are very accurate.