Only con I can recall about 600/660s back when they were fairly new, were some problems with the safety being reliable. I consider all safeties to be "unreliable", so if one practices safe gun handling at all times, might not be a problem?
They are great handling little buggers and most that I've seen, shoot very well. Years ago just about every farm kid within a mile of my camp seemed to have one in 243. At least it looked like it around there, on the first day of buck seasons. ;o)
