Have a older shooter grade Colt Super 38 1911A1 and got a Nowlin 9mm SS 5" barrel. Lead on it was a little longer so I was able to seat the bullets out pretty good. I was able to use the 38 Super magazines. Fed better with longer OAL. Later got some Wilson 9mm mags and loaded 9mm to standard length. It was okay accuracy wise. Figured that I had something that would shoot 9MM. Sold off the mags and barrels ( Super was older type headspaced on semi rim) I kept the frame and slide for a project. My main 1911s is in 45ACP.