The first thing to understand regarding target loads in a 9mm, is you will need to change out the recoil springs and possibly other work to your gun in order to shoot low velocity loads. Semi auto's function on the "blowback" pressure, to lower the pressure (low velocity loads) will cause the firearm to not operate properly. The slide will not travel all the way back allowing the fired round to be properly ejected, and a new round picked up. In the reloading or the gunsmithing sections you will get better info on what weight springs to use, etc.

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H Richard
SWCA1967 SWHF244