Good barrels (assuming fitted well, including bushing/barrel/frame fit) will really show up at 25 & especially 50 yards, with true match grade ammo(almost impossible to find today).
Closer ranges & lesser ammo likely won't show clear changes.
More or less the end of the discussion on 1911's..................there is a reason the old Colt manufactured 7791414 NM barrels & bushing were so sought after by shooter for match guns.
Kart is likely top of the AM barrel accuracy heap today; don't know about the current version of "NM" barrels from Colt, but generally speaking Colt barrels have always been decent, IMO.
Various version of the Colt Gold Cup will typically shoot around 3" from a Ransom Rest at 50 yds; it's more or less a given, that a well built, well barreled gun will do half that................not many are going to win a competitive 50 yd match with a 3" gun.
If you're not consistently shooting 25 yds or greater with real match ammo, probably not worth the work or the money to worry about it unless a gun is shooting patterns instead of groups.
JMHO
MM
