SKS's are an awesome value. I've got a totally stock pinned-barrel Chinese one that I often shoot in our local 100 yard DCM matches with respectable results. With Chinese ammo my groups typically run about 2 1/2 inches wide by 6 inches vertical due to a strange tendency to shoot almost separate high and low groups. I almost seem to do better offhand, so last fall I took it to a local turkey shoot and won a frozen turkey shooting at milk jugs at 100 yards. Out of dozens of guys shooting bolt and lever guns, only 3 others got turkeys. And they said I was the only guy to even attempt it with iron sights. Got my picture in the paper even! The practical accuracy isn't bad.
Pinned barrels are not highly esteemed, and when you see the little pin you'll wonder how the barrel stays in at all. But mine works great, and I've fired several more, and never heard of anyone having any trouble with one. I wouldn't shy away from them at all.
The rifle is very pleasant to shoot, as far as recoil and muzzle blast. The "brass" does go into low orbit, but who cares? Russian ammo in my gun barely stays on a paper plate at 100 yards, but others report it's better than the Chinese in their guns. My rifle never jams, but it sounds like when they do it's usually caused by cheapo extended magazines.
I've heard that Romanian guns have more tolerance problems than Chinese, but I don't have any first-hand experience with Romanian or Russian ones.
Oh, Kevin N, the SKS does fire from a locked breech, with a tilting bolt system similar to the FN-49, FAL, MAS-49, or several other rifles. It has the separate bolt and bolt carrier just like an AR-15, performing analogous functions.