I've had years of experience with HS6 in 9mm, 38 spcl, and .40 cal., and it has served very well for my shooting needs with jacketed bullets.
My usual load, although I strongly recommend you always work up from a start charge, is 6.2 grs. with a 115 gr. JHP or FMJ @ and OAL of 1.110" according to my log book. The data I used was for Sierra FMJ's & JHP's and shows a table 5.5 grs. - 7.0 grs.. But as I said, working up is elemental in avoiding a high pressure situation, and this couldn't be more important than in a high pressure cartridge such as 9mm.
Seating depth has a significant effect on pressures, so make sure you do your work up at a constant OAL, or the one you have determined to be functional in your firearm. So if you should change the OAL and or bullet brand / type, always re-work your powder charge accordingly, specifically from a place on the table near, or at the published start charge. Follow these simple guidelines and it will be smooth sailing.
GS