John - when I first started IPSC back in the 70's, before it turned into a race-gun event, a person could compete with a model 1911 .45, even a mil. handgun in good shape, new link, bushing and maybe barrel. I made "A" (top 10) with a store bought M1911 nickel plate & factory hardball - 56 shooter event. I still preferred my .44 M29, but B was the best I could do with the wheelgun.

One aspect of cowboy action is they also have a category for M1911's. Maybe something to think about?