I have been a Bullseye shooter (rimfire only) for quite a few years and just recently decided to get into shooting centerfire and .45 ACP.
I got a Springfield Mil-Spec 1911-A1, took it to a gunsmith (a retired machinist who heads up our pistol team and shoots also) who has a great reputation in the local area for building wadcutter guns. Prior to the rebuild, I got 10.5" groups from the gun right out of the box with my wadcutter loads at 50 yards off of a Ransom Rest. After a new Kart Match barrel, bushing, slide spring to accomodate the dot weight on the slide, a trigger job and some fitting and tweaking, the Springfield now puts 5 shots in the X-ring at 50 yards off the same Ransom Rest.
Needless to say, I am extremely delighted. I just wish I could shoot as well as the gun seems to be able to, but I am improving. I have found that shooting a .45 ACP Wadcutter gun is a little bit different than shooting a .22 S&W Model 41.
Here ya' go ... I wouldn't want you to strain your eyes on my avatar: