I just handed my 3" 45 with 200 grain semi wad cutters to a guy Sunday. He had a 40 and was all over the target. His spread was about 14 inches at about 12 yards.
He shoots my 45. having never handled one before, after I briefed him of the controls and safeties of the 45 and he commenced to shoot about a 6 inch group.
I have a 40 and much perfer the 45