My load in 9 for combat shooting is 5.4 gr CFE Pistol and a 115 XTreme plated. I taper crimp mildly just to turn the flare in. Every round is checked in a max cartridge gauge. Shoots outstanding in my CZ75B
As you have mentioned I found that crimping just enough to get rid of the flare is very important for function in your 9mm. I use the oldMy load in 9 for combat shooting is 5.4 gr CFE Pistol and a 115 XTreme plated. I taper crimp mildly just to turn the flare in. Every round is checked in a max cartridge gauge. Shoots outstanding in my CZ75B