(Portland, OR)  --  An investigation is ongoing into a shooting outside a bar at North Mississippi Avenue and North Shaver Street.  Police say someone called 9-1-1 early yesterday morning after hearing gunfire during an argument involving about 50 people.  Police say the fight broke out inside the 1905 Club at 830 North Shaver Street.  The group was reportedly escorted outside the bar, where the fight continued until police arrived.  No injuries were reported.