I know a lot of the IDPA guys are going to the 40 because they can shoot a much lighter load and reach the power floor. I shoot a 1911 in .45 myself. I use a 200 grain lead cast round nose flat point over 4.9 grains of titegroup.
Super Accurate, very controlable.
Sorry. I got a little of topic.
Romans 1:16 I am not ashamed of the gospel, because it is the power of God for the salvation of everyone who believes: first for the Jew, then for the Gentile.