I only have the 23" match chamber barrel, not a "standard" chamber barrel to compare side-by-side with. Mine is exceptionally accurate. I do not shoot matches with it, but small game. head shots are no problem at all at 50-75 yards, which is about all I try it at off hand anyway. I'm not using match ammo, but the cheap as dirt American Eagle red brick ammo, with I believe the 40 gr hp. With that ammo I have no problem covering my 5 shot groups at 50 yards with a quarter.
I've never really given it a hard test with match ammo and match conditions. I can tell you that no squirrel or rabbit is safe at 100 yards if I can spot them and they're dumb enough to sit still.