I have also been shopping around for a Springfield "Loaded" 1911, but now I'm not so sure. I was checking out the Clark Custom Guns site in the 1911 FAQ section when I saw this..."As long as the bore is good, most factory barrels* can be made to shoot as well as match barrels..." then at the bottom of the page,"*Springfield Armory factory barrels must be tested in our barrel fixture before being utilized in an accuracy job." What's up with that? Does SA have some quality control problems that I'm unaware of?
Swoop
I don't know of any QC issues.
Part of it may be that some factory barrels have a thinner wall thickness than others. If you do an accuracy job, it sometimes means making the barrel lock up tighter than factory. This puts some extra stress in some areas of the barrel and could, under extreme circumstances, lead to problems I think. A super tight barrel bushing combined with ultra tight lock-up at the link and lugs could possibly bow a thin barrel if it is the least bit out of alignment.
Super tight tolerances can (but not always) put extra stress in some areas that are not there on a factory gun.
M25operator may be better able to give a more precise answer to this.
My SA is no Bullseye gun, but from a sandbag it will out-shoot my capabilities with Federal Match ammo.