I have a Norinco 98 I picked up a couple years ago that I've only shot 2 3/4" shells in. On the barrel it says 12GA.2 3/4".3" I got to thinking that might mean it can shoot 3" ones. Does anyone know if this is true and if it would be wise to do so? I've never had any problems with it, anyone also know if Norinco's have any noteable problems?