I've loaded cast Lyman and Lee LRN and LTC bullets for almost a couple generations now. Cheap bullets and lots more shooting than factory bullets allow. I would suggest the traditional 121 grain or 125 grain designs sized to 0.356" to duplicate factory FMJ velocity, function, and point-of-aim. They have functioned reliably in most every 9mm I've fired: Walther P1, S&W M39/M52, Browning HP, Beretta M92F, Polish P-35, and even smg. The only one with marginal functioning was the Parabellum ("Luger"), and that was because of the stiff toggle action. All the others were tilting barrels or locks, and worked very well if you watch the OAL and load to above 1,000 fps.