Nice Dez, though I doubt you can load the shells through the gate without relieving the frame. Have you considered one of the R&D types?
@ HFreedman:
The base gun was about $350 from Marstar, the Kirst Konverter was $275 and the ejector rod was $125. The gunsmithing all told was almost $300, but I got it really nicely blued, trigger tuned, etc and the Konverter fitted and re-blued as well.
When I put it this way... ouch! Damn thing was expensive... and I did some of the work myself too.