My first option would be to put a light on my 19.5 to add a little weight to it. Not sure if this would help, but I'd give it a try just to see. I also have a 432PD in .32H&R, which would be great from a recoil perspective but not great from a capacity perspective. Honestly, I might also consider a Glock 44. The first one I had experienced a few malfunctions over the first few hundred rounds, but I don't recall any problems after ~500 rounds. For me to do this, it'd need to be a decently vetted pistol (which I don't have at the moment). I know the terminal ballistics of the .22LR leave much to be desired, so this would be a near last option for me. I need to practice more single handed shooting.