My 1911s are 90% .45ACP. There is a combo 9mm/38 Super AllenM build in there and a couple 10mms for grins. If I want to burn up 9mm, I will run the Berettas or the CZ Scorpion. You have to appreciate the 1911 design and refinements to run it well. Most new shooters just want to hit paper, not their previous holes so a plastic brick is fine for them. When I want to shoot groups, I shoot my 1911s.