[fred cook]

Sig 220 in .45 acp caliber? They use a single column magazine so the grip is not huge, but with aftermarket rubber grips, they are just thick enough in the grip to help spread out the felt recoil. I think the mags hold 7-8 rounds so there is no issue with "hi-cap" mags. And, of course, Sig builds a very fine pistol! Another possibility might be the CZ47. It is a full sized pistol in the .45 acp chambering. I know that they are not 1911s, but both are certainly worth considering. Good luck with your search!