Over the summer, we had a couple of threads going about the challenges of 9x19 with cast bullets. The comments in the threads got me motivated to try again, after having previously given up due to too much leading and the cleaning chores.
I've reached the promised land.
I'm using the Lee 358-125 RNFP sized .358, with LARS Red Carnauba (also my go to bullet for most 38 special plinking), sitting on top of a mild charge of 700X, processed with Lee's four die set.
I've tried this load in a S&W 5906, a Taurus Mil Pro PT111, and an Astra A100. After shooting, the barrel cleanup for each was no different than shooting jacketed. Very little fouling. The Astra A100 is quickly becoming a favorite of mine. It's crazy accurate with this cast load. That gun, in my hands, and in the hands of some inexperienced shooters, has sent about 500 of these downrange so far, and it's been a revelation. Put nearly 200 rounds through it one night last week. The accuracy was unchanged throughout the session, and the barrel cleaned up so easily afterwards. And it tears out the center of the target. Easy on the gun. Easy on the shooter. Dead nuts reliable functioning. Have not chrono'd it yet, but will do so over the winter.
To all those who posted encouraging comments in the various "I'm about to give up on 9mm" threads, thank you!