Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Type 745
Communication Breakdown; Workload
Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance
Flight Crew Executed Go Around / Missed Approach
Procedure; Weather
On a missed approach from 27L in ORD we were given a heading and a altitude of 5;000 feet. After the aircraft was cleaned up and passing through 3;500 feet closer to 4;000 feet we were given and altitude of maintain 4;000 feet the altitude was put in the window and verified by both pilots and with our high climb rate and close to the altitude we went through the 4;000 feet altitude by 300 feet. At the time we reached 4;000 feet myself the captain and the controller realize that we were going to go through the altitude and we were told to descend and maintain 4;000 feet. The flight was vectored around for 28C Approach and landed.
[Report narrative contained no additional information.]
A319 First Officer reported during go-around initial missed approach altitude was changed from 5;000 to 4;000 and the autopilot was unable to keep up.