Professor - The technique could certainly be applied to .44, .41, .38 and other rimfires. I made similar 32 rimfire cases a number of years ago and they worked well.
Why? Well, like I said, I enjoy the challenge of bringing them back to life. I have changed several rolling blocks from RF to CF. But those are pretty straight forward. This rifle is not so easy. But if someone manufactured CF conversion kit, I'd be very interested. But for now, I'm happy to make these.