Boy, I know that feeling!
But I'm well past "I just want one" and I'm head-long in to "I will have one."
I think with some playing with loads and springs, you'll make it work if you want to take the time to get it "just right." The full wadcutters, I think, would be asking a heckuva lot from an autoloader. Honestly, I'm aware of the S&W Model 52 but I've never seen one in action and I have no idea how it worked as well as it did.
I'm not even a blind old man (yet) and I can struggle putting 6 rounds of full wadcutter in to a revolver cylinder with a speed loader. Asking a semi-auto to feed them is asking a lot.