When I first bought the game back in 2010, when you aim with some guns - hunting rifle especially, the aim was slightly off center to the crosshair making precise shots a real headache. Did they ever fix this?

Also, is the UE worth buying for PS3?

Hunting rifle specifically is apparently still off a tad in a way that effects only the most long-range shots, though fixed with the scope mod.
Besides that, very few ironsights are off. Can't think of another one actually.

As for PS3, try to avoid the PS3 version if you can. Get 360 or PC. Some people have 0 problems with the PS3 version, but the risk is much higher for the PS3.

Cant, I only have a ps3. But thanks.