That's where that freakin' page is!! Thanx Calum, I've been looking for that link for about a month, I can never remember where that damn page is!
*bookmarked!*
As far as the quality of pinned barrels, I remember Alberta Tactical Rifle expressing his displeasure with a small batch of SKS's that he sold, I think 4 or 5 out of 10 had barrel separation problems (the barrel was being forced out of the reciever) after less than 200 rounds. The pinned barrel models are newer rifles, manufactured by Norinco within the last 20 years or so, I would imagine the problem rifles that Alberta Tactical Rifle got were from an early production run that was produced during the transition between the threaded barrel tooling and pinned barrel tooling.
Another member here on the boards (Ollie) returned his SKS to SIR mailorder because it was showing signs of barrel separation. If the link above is correct, the pinned barrel
should also be an interference fit in the reciever (ie; the barrel diameter is actually larger than the hole in the reciever). Interference fits are just as strong (if not stronger!) as many other attachment methods, including screw threads. I'm sure some of the machinists and material engineering guys around here (Mudpuppy and Holleyman come to mind) can verify this. If the barrel and reciever dimensions are correct, there's
no way that barrel is comin' outta there without some serious force (ie; a hydraulic press!!). Overall though, threaded barrels have shown
zero problems on any SKS's in the past, and pinned barrels have, so given the choice I'd take a threaded barrel

Just my 2 cents.