I agree whole heartidly with what Brian just said in the above post. The slide to frame fit has little to do with overall acurracy of the weapon. It will have a ton to do with reliability though. The key to accuracy is a correctly fitted barrel bushing and a correctly fitted barrel to both the frame and the slide. This is where the accuracy lies.
I have owned any number of .45acp's over the past 10 years or so, when I decided that this is what I wanted to carry. These have included Kimber, Para Ordinance, Colt, Star PD and Firestar. Handsdown the BEST of them all has been the Colt CCO. Not one hiccup period, in over 2k rounds through the gun. Not mag. related or gun related or shooter related. In a word it is very non critical to shoot. It feeds anything and everything I have put through it, even lite wad cutter target loads. The barrel fit to the frame with the feet and link pin is SUPERB! It is like a bank vault. You can press on it all day till the cows come home and you will not detect the slightest downward movement at all. NONE. The bushing fit is the same. You can press all day on the bushing trying to move it up and down etc. and the same thing. 0 play. Same goes with the barrel to bushing fit. The barrel stays right where it is with no discernable play in any direction. I also have a perfectly symetrical ring worn around the barrel from shooting. This is my daily carry gun. I have owned it for a year and a half and the slightly over 2k rounds isn't alot but I do know 100% it will go bang when the trigger is pulled, and I know it won't barf if and when the need is there to use it.
This gun is light weight, accurate, 100% reliable, and feeds anything. Recoil is very managable even with the light wt. frame, and the ergonomics are superd. Great carry bevel package too. When I was looking to get a Commander sized carry gun I looked at and shot a number of Springfields, Kimbers, and Para's, along with the Sigs and Glocks. This is the one I settled on. Don't regret it one iota. Oh yea the frame and slide rattle a bit when I shake it. So what! I just know if the thing gets dirty which it does when I shoot cause I shoot alot in bunches as I don't reload, it will work. It also cost me a hundred bucks less than the Kimber lt. wt. compact I was looking at too,. Colt hit the nail on the head when they made the CCO. It never ceases to amaze me when I read gun magazine reports on how they test a Wilson, Baer etc. and they will say the gun has to be shot so many rounds to be broken in or this mag or that mag. won't work in it. BS is what I say. The gun should work anytime and everytime 100% with any round and any type of h.p. configuration as long as it is the same caliber. My Kimber Classic pretty much did but it wouldn't lock the slide back reliably at all. My first Commander(Combat) would feed and shoot everything 100% it would just tend to shoot bushings out. My Gov't model Enhanced was a great gun. Regeret letting it go. 100% just like the CCO. The others would have some sort of problem or other when shooting them. Sorry for being longwinded, but some times it never ceases to amaze me what people will settle for in a self defense handgun, just because of what they are told or sold. thanks and keep'em sharp