The performance of the Spitfire during the Dunkirk evacuation came as a surprise although the German pilots retained a strong belief that their 109 was the superior fighter. However, the Bf 109E had a much larger turning circle than either the Hurricane or the Spitfire. The two British fighters had eight Browning 303 machine guns, but most Bf 109Es had two machine guns and two wing cannons. The Bf 109E and the Spitfire were superior to each other in key areas. For instance, at some altitudes, the Bf 109 could outclimb the British fighter.