I think if you compare a true orig spec USGI Colt 1911 (the ones that rattle when shaken) and the Norc, they would shoot equally bad/good depending on how you look at it. The Norc is built to the same generous dimensions.
Now the same work that transforms a rattly old war horse, can be done to the Norc with equally good results.
Since the enormous interest in the 1911 as a comp HG, most modern big name brands start with frames/slides made to tighter tolerances. Throw in some fitting and you have a great shooter. The Norc does the same thing for about 1/3 the price but need way more TLC.
If not happy with the way the factory Norc shoots, swap in a tighter bushing (fitted is best), a longer link (or just swap in a barrel with oversized hood - fitting usually required) and I bet the groups shrink in 1/2.
From there, you can gut all the other parts to improve trigger and feel/looks. A bit more polishing and honing and it runs like a charm. Get really ambitious and peen rails and fit and voila, a match quality 1911 done the old school way.
Wilson developed an entire line of custom pistols based on the Norc when they could get them. All printed articles I read were extremely positive about the quality and strength of the metal used in the frames. Why would they bother trying to build $2500US pistols on a piece of crap?
My personal Norc has a full sized frame with an aftermarket commander slide/top end. Not much of the orig parts remain. Still, with a ton of aftermarket parts, still about 1/2 the cost of a big name pistol. I did all the fitting so saved on the labour.
Shoots my handloads in the 2 to 3" range at 35yds so not bad at all. Now mounted to a MechTech carbine and having a hoot with that.
Jerry