IIRC what you have replicated (more or less) is the 9mm Super Cooper. Col. Jeff Cooper wrote an article about that concept in a 1911 frame for a trail gun back in the 80's I belive. He said it might be better than a .45 acp for outdoor use because of the flatter trajectory for long shots. I seem to remember that his vversion had a 6" barrel with a regular length slide. You might be able to find some info if you hunt around.