109 advice needed (climb)

[reflected]

Just now I shot up a Hurricane head on, then I started climbing away (I had E advantage) . I trimmed my E-3 perfectly, 2400 RPM, full throttle, climbing at 300 kph. By the time we were over France the Hurricane got within firing distance and shot me down.

What was I doing wrong? I obviously made a mistake, because the Hurricane was notorious for being slow, and sluggish, like a grand-piano with a Merlin.

Thanks in advance.